gitattributes.html - external/gitster/git-htmldocs.git - Git at Google

 <!DOCTYPE html>
 <html xmlns="http://www.w3.org/1999/xhtml" lang="en">
 <head>
 <meta charset="UTF-8"/>
 <meta http-equiv="X-UA-Compatible" content="IE=edge"/>
 <meta name="viewport" content="width=device-width, initial-scale=1.0"/>
 <meta name="generator" content="Asciidoctor 2.0.23"/>
 <title>gitattributes(5)</title>
 <link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Open+Sans:300,300italic,400,400italic,600,600italic%7CNoto+Serif:400,400italic,700,700italic%7CDroid+Sans+Mono:400,700"/>
 <style>
 /*! Asciidoctor default stylesheet | MIT License | https://asciidoctor.org */
 /* Uncomment the following line when using as a custom stylesheet */
 /* @import "https://fonts.googleapis.com/css?family=Open+Sans:300,300italic,400,400italic,600,600italic%7CNoto+Serif:400,400italic,700,700italic%7CDroid+Sans+Mono:400,700"; */
 html{font-family:sans-serif;-webkit-text-size-adjust:100%}
 a{background:none}
 a:focus{outline:thin dotted}
 a:active,a:hover{outline:0}
 h1{font-size:2em;margin:.67em 0}
 b,strong{font-weight:bold}
 abbr{font-size:.9em}
 abbr[title]{cursor:help;border-bottom:1px dotted #dddddf;text-decoration:none}
 dfn{font-style:italic}
 hr{height:0}
 mark{background:#ff0;color:#000}
 code,kbd,pre,samp{font-family:monospace;font-size:1em}
 pre{white-space:pre-wrap}
 q{quotes:"\201C" "\201D" "\2018" "\2019"}
 small{font-size:80%}
 sub,sup{font-size:75%;line-height:0;position:relative;vertical-align:baseline}
 sup{top:-.5em}
 sub{bottom:-.25em}
 img{border:0}
 svg:not(:root){overflow:hidden}
 figure{margin:0}
 audio,video{display:inline-block}
 audio:not([controls]){display:none;height:0}
 fieldset{border:1px solid silver;margin:0 2px;padding:.35em .625em .75em}
 legend{border:0;padding:0}
 button,input,select,textarea{font-family:inherit;font-size:100%;margin:0}
 button,input{line-height:normal}
 button,select{text-transform:none}
 button,html input[type=button],input[type=reset],input[type=submit]{-webkit-appearance:button;cursor:pointer}
 button[disabled],html input[disabled]{cursor:default}
 input[type=checkbox],input[type=radio]{padding:0}
 button::-moz-focus-inner,input::-moz-focus-inner{border:0;padding:0}
 textarea{overflow:auto;vertical-align:top}
 table{border-collapse:collapse;border-spacing:0}
 *,::before,::after{box-sizing:border-box}
 html,body{font-size:100%}
 body{background:#fff;color:rgba(0,0,0,.8);padding:0;margin:0;font-family:"Noto Serif","DejaVu Serif",serif;line-height:1;position:relative;cursor:auto;-moz-tab-size:4;-o-tab-size:4;tab-size:4;word-wrap:anywhere;-moz-osx-font-smoothing:grayscale;-webkit-font-smoothing:antialiased}
 a:hover{cursor:pointer}
 img,object,embed{max-width:100%;height:auto}
 object,embed{height:100%}
 img{-ms-interpolation-mode:bicubic}
 .left{float:left!important}
 .right{float:right!important}
 .text-left{text-align:left!important}
 .text-right{text-align:right!important}
 .text-center{text-align:center!important}
 .text-justify{text-align:justify!important}
 .hide{display:none}
 img,object,svg{display:inline-block;vertical-align:middle}
 textarea{height:auto;min-height:50px}
 select{width:100%}
 .subheader,.admonitionblock td.content>.title,.audioblock>.title,.exampleblock>.title,.imageblock>.title,.listingblock>.title,.literalblock>.title,.stemblock>.title,.openblock>.title,.paragraph>.title,.quoteblock>.title,table.tableblock>.title,.verseblock>.title,.videoblock>.title,.dlist>.title,.olist>.title,.ulist>.title,.qlist>.title,.hdlist>.title{line-height:1.45;color:#7a2518;font-weight:400;margin-top:0;margin-bottom:.25em}
 div,dl,dt,dd,ul,ol,li,h1,h2,h3,#toctitle,.sidebarblock>.content>.title,h4,h5,h6,pre,form,p,blockquote,th,td{margin:0;padding:0}
 a{color:#2156a5;text-decoration:underline;line-height:inherit}
 a:hover,a:focus{color:#1d4b8f}
 a img{border:0}
 p{line-height:1.6;margin-bottom:1.25em;text-rendering:optimizeLegibility}
 p aside{font-size:.875em;line-height:1.35;font-style:italic}
 h1,h2,h3,#toctitle,.sidebarblock>.content>.title,h4,h5,h6{font-family:"Open Sans","DejaVu Sans",sans-serif;font-weight:300;font-style:normal;color:#ba3925;text-rendering:optimizeLegibility;margin-top:1em;margin-bottom:.5em;line-height:1.0125em}
 h1 small,h2 small,h3 small,#toctitle small,.sidebarblock>.content>.title small,h4 small,h5 small,h6 small{font-size:60%;color:#e99b8f;line-height:0}
 h1{font-size:2.125em}
 h2{font-size:1.6875em}
 h3,#toctitle,.sidebarblock>.content>.title{font-size:1.375em}
 h4,h5{font-size:1.125em}
 h6{font-size:1em}
 hr{border:solid #dddddf;border-width:1px 0 0;clear:both;margin:1.25em 0 1.1875em}
 em,i{font-style:italic;line-height:inherit}
 strong,b{font-weight:bold;line-height:inherit}
 small{font-size:60%;line-height:inherit}
 code{font-family:"Droid Sans Mono","DejaVu Sans Mono",monospace;font-weight:400;color:rgba(0,0,0,.9)}
 ul,ol,dl{line-height:1.6;margin-bottom:1.25em;list-style-position:outside;font-family:inherit}
 ul,ol{margin-left:1.5em}
 ul li ul,ul li ol{margin-left:1.25em;margin-bottom:0}
 ul.circle{list-style-type:circle}
 ul.disc{list-style-type:disc}
 ul.square{list-style-type:square}
 ul.circle ul:not([class]),ul.disc ul:not([class]),ul.square ul:not([class]){list-style:inherit}
 ol li ul,ol li ol{margin-left:1.25em;margin-bottom:0}
 dl dt{margin-bottom:.3125em;font-weight:bold}
 dl dd{margin-bottom:1.25em}
 blockquote{margin:0 0 1.25em;padding:.5625em 1.25em 0 1.1875em;border-left:1px solid #ddd}
 blockquote,blockquote p{line-height:1.6;color:rgba(0,0,0,.85)}
 @media screen and (min-width:768px){h1,h2,h3,#toctitle,.sidebarblock>.content>.title,h4,h5,h6{line-height:1.2}
 h1{font-size:2.75em}
 h2{font-size:2.3125em}
 h3,#toctitle,.sidebarblock>.content>.title{font-size:1.6875em}
 h4{font-size:1.4375em}}
 table{background:#fff;margin-bottom:1.25em;border:1px solid #dedede;word-wrap:normal}
 table thead,table tfoot{background:#f7f8f7}
 table thead tr th,table thead tr td,table tfoot tr th,table tfoot tr td{padding:.5em .625em .625em;font-size:inherit;color:rgba(0,0,0,.8);text-align:left}
 table tr th,table tr td{padding:.5625em .625em;font-size:inherit;color:rgba(0,0,0,.8)}
 table tr.even,table tr.alt{background:#f8f8f7}
 table thead tr th,table tfoot tr th,table tbody tr td,table tr td,table tfoot tr td{line-height:1.6}
 h1,h2,h3,#toctitle,.sidebarblock>.content>.title,h4,h5,h6{line-height:1.2;word-spacing:-.05em}
 h1 strong,h2 strong,h3 strong,#toctitle strong,.sidebarblock>.content>.title strong,h4 strong,h5 strong,h6 strong{font-weight:400}
 .center{margin-left:auto;margin-right:auto}
 .stretch{width:100%}
 .clearfix::before,.clearfix::after,.float-group::before,.float-group::after{content:" ";display:table}
 .clearfix::after,.float-group::after{clear:both}
 :not(pre).nobreak{word-wrap:normal}
 :not(pre).nowrap{white-space:nowrap}
 :not(pre).pre-wrap{white-space:pre-wrap}
 :not(pre):not([class^=L])>code{font-size:.9375em;font-style:normal!important;letter-spacing:0;padding:.1em .5ex;word-spacing:-.15em;background:#f7f7f8;border-radius:4px;line-height:1.45;text-rendering:optimizeSpeed}
 pre{color:rgba(0,0,0,.9);font-family:"Droid Sans Mono","DejaVu Sans Mono",monospace;line-height:1.45;text-rendering:optimizeSpeed}
 pre code,pre pre{color:inherit;font-size:inherit;line-height:inherit}
 pre>code{display:block}
 pre.nowrap,pre.nowrap pre{white-space:pre;word-wrap:normal}
 em em{font-style:normal}
 strong strong{font-weight:400}
 .keyseq{color:rgba(51,51,51,.8)}
 kbd{font-family:"Droid Sans Mono","DejaVu Sans Mono",monospace;display:inline-block;color:rgba(0,0,0,.8);font-size:.65em;line-height:1.45;background:#f7f7f7;border:1px solid #ccc;border-radius:3px;box-shadow:0 1px 0 rgba(0,0,0,.2),inset 0 0 0 .1em #fff;margin:0 .15em;padding:.2em .5em;vertical-align:middle;position:relative;top:-.1em;white-space:nowrap}
 .keyseq kbd:first-child{margin-left:0}
 .keyseq kbd:last-child{margin-right:0}
 .menuseq,.menuref{color:#000}
 .menuseq b:not(.caret),.menuref{font-weight:inherit}
 .menuseq{word-spacing:-.02em}
 .menuseq b.caret{font-size:1.25em;line-height:.8}
 .menuseq i.caret{font-weight:bold;text-align:center;width:.45em}
 b.button::before,b.button::after{position:relative;top:-1px;font-weight:400}
 b.button::before{content:"[";padding:0 3px 0 2px}
 b.button::after{content:"]";padding:0 2px 0 3px}
 p a>code:hover{color:rgba(0,0,0,.9)}
 #header,#content,#footnotes,#footer{width:100%;margin:0 auto;max-width:62.5em;*zoom:1;position:relative;padding-left:.9375em;padding-right:.9375em}
 #header::before,#header::after,#content::before,#content::after,#footnotes::before,#footnotes::after,#footer::before,#footer::after{content:" ";display:table}
 #header::after,#content::after,#footnotes::after,#footer::after{clear:both}
 #content{margin-top:1.25em}
 #content::before{content:none}
 #header>h1:first-child{color:rgba(0,0,0,.85);margin-top:2.25rem;margin-bottom:0}
 #header>h1:first-child+#toc{margin-top:8px;border-top:1px solid #dddddf}
 #header>h1:only-child{border-bottom:1px solid #dddddf;padding-bottom:8px}
 #header .details{border-bottom:1px solid #dddddf;line-height:1.45;padding-top:.25em;padding-bottom:.25em;padding-left:.25em;color:rgba(0,0,0,.6);display:flex;flex-flow:row wrap}
 #header .details span:first-child{margin-left:-.125em}
 #header .details span.email a{color:rgba(0,0,0,.85)}
 #header .details br{display:none}
 #header .details br+span::before{content:"\00a0\2013\00a0"}
 #header .details br+span.author::before{content:"\00a0\22c5\00a0";color:rgba(0,0,0,.85)}
 #header .details br+span#revremark::before{content:"\00a0|\00a0"}
 #header #revnumber{text-transform:capitalize}
 #header #revnumber::after{content:"\00a0"}
 #content>h1:first-child:not([class]){color:rgba(0,0,0,.85);border-bottom:1px solid #dddddf;padding-bottom:8px;margin-top:0;padding-top:1rem;margin-bottom:1.25rem}
 #toc{border-bottom:1px solid #e7e7e9;padding-bottom:.5em}
 #toc>ul{margin-left:.125em}
 #toc ul.sectlevel0>li>a{font-style:italic}
 #toc ul.sectlevel0 ul.sectlevel1{margin:.5em 0}
 #toc ul{font-family:"Open Sans","DejaVu Sans",sans-serif;list-style-type:none}
 #toc li{line-height:1.3334;margin-top:.3334em}
 #toc a{text-decoration:none}
 #toc a:active{text-decoration:underline}
 #toctitle{color:#7a2518;font-size:1.2em}
 @media screen and (min-width:768px){#toctitle{font-size:1.375em}
 body.toc2{padding-left:15em;padding-right:0}
 body.toc2 #header>h1:nth-last-child(2){border-bottom:1px solid #dddddf;padding-bottom:8px}
 #toc.toc2{margin-top:0!important;background:#f8f8f7;position:fixed;width:15em;left:0;top:0;border-right:1px solid #e7e7e9;border-top-width:0!important;border-bottom-width:0!important;z-index:1000;padding:1.25em 1em;height:100%;overflow:auto}
 #toc.toc2 #toctitle{margin-top:0;margin-bottom:.8rem;font-size:1.2em}
 #toc.toc2>ul{font-size:.9em;margin-bottom:0}
 #toc.toc2 ul ul{margin-left:0;padding-left:1em}
 #toc.toc2 ul.sectlevel0 ul.sectlevel1{padding-left:0;margin-top:.5em;margin-bottom:.5em}
 body.toc2.toc-right{padding-left:0;padding-right:15em}
 body.toc2.toc-right #toc.toc2{border-right-width:0;border-left:1px solid #e7e7e9;left:auto;right:0}}
 @media screen and (min-width:1280px){body.toc2{padding-left:20em;padding-right:0}
 #toc.toc2{width:20em}
 #toc.toc2 #toctitle{font-size:1.375em}
 #toc.toc2>ul{font-size:.95em}
 #toc.toc2 ul ul{padding-left:1.25em}
 body.toc2.toc-right{padding-left:0;padding-right:20em}}
 #content #toc{border:1px solid #e0e0dc;margin-bottom:1.25em;padding:1.25em;background:#f8f8f7;border-radius:4px}
 #content #toc>:first-child{margin-top:0}
 #content #toc>:last-child{margin-bottom:0}
 #footer{max-width:none;background:rgba(0,0,0,.8);padding:1.25em}
 #footer-text{color:hsla(0,0%,100%,.8);line-height:1.44}
 #content{margin-bottom:.625em}
 .sect1{padding-bottom:.625em}
 @media screen and (min-width:768px){#content{margin-bottom:1.25em}
 .sect1{padding-bottom:1.25em}}
 .sect1:last-child{padding-bottom:0}
 .sect1+.sect1{border-top:1px solid #e7e7e9}
 #content h1>a.anchor,h2>a.anchor,h3>a.anchor,#toctitle>a.anchor,.sidebarblock>.content>.title>a.anchor,h4>a.anchor,h5>a.anchor,h6>a.anchor{position:absolute;z-index:1001;width:1.5ex;margin-left:-1.5ex;display:block;text-decoration:none!important;visibility:hidden;text-align:center;font-weight:400}
 #content h1>a.anchor::before,h2>a.anchor::before,h3>a.anchor::before,#toctitle>a.anchor::before,.sidebarblock>.content>.title>a.anchor::before,h4>a.anchor::before,h5>a.anchor::before,h6>a.anchor::before{content:"\00A7";font-size:.85em;display:block;padding-top:.1em}
 #content h1:hover>a.anchor,#content h1>a.anchor:hover,h2:hover>a.anchor,h2>a.anchor:hover,h3:hover>a.anchor,#toctitle:hover>a.anchor,.sidebarblock>.content>.title:hover>a.anchor,h3>a.anchor:hover,#toctitle>a.anchor:hover,.sidebarblock>.content>.title>a.anchor:hover,h4:hover>a.anchor,h4>a.anchor:hover,h5:hover>a.anchor,h5>a.anchor:hover,h6:hover>a.anchor,h6>a.anchor:hover{visibility:visible}
 #content h1>a.link,h2>a.link,h3>a.link,#toctitle>a.link,.sidebarblock>.content>.title>a.link,h4>a.link,h5>a.link,h6>a.link{color:#ba3925;text-decoration:none}
 #content h1>a.link:hover,h2>a.link:hover,h3>a.link:hover,#toctitle>a.link:hover,.sidebarblock>.content>.title>a.link:hover,h4>a.link:hover,h5>a.link:hover,h6>a.link:hover{color:#a53221}
 details,.audioblock,.imageblock,.literalblock,.listingblock,.stemblock,.videoblock{margin-bottom:1.25em}
 details{margin-left:1.25rem}
 details>summary{cursor:pointer;display:block;position:relative;line-height:1.6;margin-bottom:.625rem;outline:none;-webkit-tap-highlight-color:transparent}
 details>summary::-webkit-details-marker{display:none}
 details>summary::before{content:"";border:solid transparent;border-left:solid;border-width:.3em 0 .3em .5em;position:absolute;top:.5em;left:-1.25rem;transform:translateX(15%)}
 details[open]>summary::before{border:solid transparent;border-top:solid;border-width:.5em .3em 0;transform:translateY(15%)}
 details>summary::after{content:"";width:1.25rem;height:1em;position:absolute;top:.3em;left:-1.25rem}
 .admonitionblock td.content>.title,.audioblock>.title,.exampleblock>.title,.imageblock>.title,.listingblock>.title,.literalblock>.title,.stemblock>.title,.openblock>.title,.paragraph>.title,.quoteblock>.title,table.tableblock>.title,.verseblock>.title,.videoblock>.title,.dlist>.title,.olist>.title,.ulist>.title,.qlist>.title,.hdlist>.title{text-rendering:optimizeLegibility;text-align:left;font-family:"Noto Serif","DejaVu Serif",serif;font-size:1rem;font-style:italic}
 table.tableblock.fit-content>caption.title{white-space:nowrap;width:0}
 .paragraph.lead>p,#preamble>.sectionbody>[class=paragraph]:first-of-type p{font-size:1.21875em;line-height:1.6;color:rgba(0,0,0,.85)}
 .admonitionblock>table{border-collapse:separate;border:0;background:none;width:100%}
 .admonitionblock>table td.icon{text-align:center;width:80px}
 .admonitionblock>table td.icon img{max-width:none}
 .admonitionblock>table td.icon .title{font-weight:bold;font-family:"Open Sans","DejaVu Sans",sans-serif;text-transform:uppercase}
 .admonitionblock>table td.content{padding-left:1.125em;padding-right:1.25em;border-left:1px solid #dddddf;color:rgba(0,0,0,.6);word-wrap:anywhere}
 .admonitionblock>table td.content>:last-child>:last-child{margin-bottom:0}
 .exampleblock>.content{border:1px solid #e6e6e6;margin-bottom:1.25em;padding:1.25em;background:#fff;border-radius:4px}
 .sidebarblock{border:1px solid #dbdbd6;margin-bottom:1.25em;padding:1.25em;background:#f3f3f2;border-radius:4px}
 .sidebarblock>.content>.title{color:#7a2518;margin-top:0;text-align:center}
 .exampleblock>.content>:first-child,.sidebarblock>.content>:first-child{margin-top:0}
 .exampleblock>.content>:last-child,.exampleblock>.content>:last-child>:last-child,.exampleblock>.content .olist>ol>li:last-child>:last-child,.exampleblock>.content .ulist>ul>li:last-child>:last-child,.exampleblock>.content .qlist>ol>li:last-child>:last-child,.sidebarblock>.content>:last-child,.sidebarblock>.content>:last-child>:last-child,.sidebarblock>.content .olist>ol>li:last-child>:last-child,.sidebarblock>.content .ulist>ul>li:last-child>:last-child,.sidebarblock>.content .qlist>ol>li:last-child>:last-child{margin-bottom:0}
 .literalblock pre,.listingblock>.content>pre{border-radius:4px;overflow-x:auto;padding:1em;font-size:.8125em}
 @media screen and (min-width:768px){.literalblock pre,.listingblock>.content>pre{font-size:.90625em}}
 @media screen and (min-width:1280px){.literalblock pre,.listingblock>.content>pre{font-size:1em}}
 .literalblock pre,.listingblock>.content>pre:not(.highlight),.listingblock>.content>pre[class=highlight],.listingblock>.content>pre[class^="highlight "]{background:#f7f7f8}
 .literalblock.output pre{color:#f7f7f8;background:rgba(0,0,0,.9)}
 .listingblock>.content{position:relative}
 .listingblock code[data-lang]::before{display:none;content:attr(data-lang);position:absolute;font-size:.75em;top:.425rem;right:.5rem;line-height:1;text-transform:uppercase;color:inherit;opacity:.5}
 .listingblock:hover code[data-lang]::before{display:block}
 .listingblock.terminal pre .command::before{content:attr(data-prompt);padding-right:.5em;color:inherit;opacity:.5}
 .listingblock.terminal pre .command:not([data-prompt])::before{content:"$"}
 .listingblock pre.highlightjs{padding:0}
 .listingblock pre.highlightjs>code{padding:1em;border-radius:4px}
 .listingblock pre.prettyprint{border-width:0}
 .prettyprint{background:#f7f7f8}
 pre.prettyprint .linenums{line-height:1.45;margin-left:2em}
 pre.prettyprint li{background:none;list-style-type:inherit;padding-left:0}
 pre.prettyprint li code[data-lang]::before{opacity:1}
 pre.prettyprint li:not(:first-child) code[data-lang]::before{display:none}
 table.linenotable{border-collapse:separate;border:0;margin-bottom:0;background:none}
 table.linenotable td[class]{color:inherit;vertical-align:top;padding:0;line-height:inherit;white-space:normal}
 table.linenotable td.code{padding-left:.75em}
 table.linenotable td.linenos,pre.pygments .linenos{border-right:1px solid;opacity:.35;padding-right:.5em;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none}
 pre.pygments span.linenos{display:inline-block;margin-right:.75em}
 .quoteblock{margin:0 1em 1.25em 1.5em;display:table}
 .quoteblock:not(.excerpt)>.title{margin-left:-1.5em;margin-bottom:.75em}
 .quoteblock blockquote,.quoteblock p{color:rgba(0,0,0,.85);font-size:1.15rem;line-height:1.75;word-spacing:.1em;letter-spacing:0;font-style:italic;text-align:justify}
 .quoteblock blockquote{margin:0;padding:0;border:0}
 .quoteblock blockquote::before{content:"\201c";float:left;font-size:2.75em;font-weight:bold;line-height:.6em;margin-left:-.6em;color:#7a2518;text-shadow:0 1px 2px rgba(0,0,0,.1)}
 .quoteblock blockquote>.paragraph:last-child p{margin-bottom:0}
 .quoteblock .attribution{margin-top:.75em;margin-right:.5ex;text-align:right}
 .verseblock{margin:0 1em 1.25em}
 .verseblock pre{font-family:"Open Sans","DejaVu Sans",sans-serif;font-size:1.15rem;color:rgba(0,0,0,.85);font-weight:300;text-rendering:optimizeLegibility}
 .verseblock pre strong{font-weight:400}
 .verseblock .attribution{margin-top:1.25rem;margin-left:.5ex}
 .quoteblock .attribution,.verseblock .attribution{font-size:.9375em;line-height:1.45;font-style:italic}
 .quoteblock .attribution br,.verseblock .attribution br{display:none}
 .quoteblock .attribution cite,.verseblock .attribution cite{display:block;letter-spacing:-.025em;color:rgba(0,0,0,.6)}
 .quoteblock.abstract blockquote::before,.quoteblock.excerpt blockquote::before,.quoteblock .quoteblock blockquote::before{display:none}
 .quoteblock.abstract blockquote,.quoteblock.abstract p,.quoteblock.excerpt blockquote,.quoteblock.excerpt p,.quoteblock .quoteblock blockquote,.quoteblock .quoteblock p{line-height:1.6;word-spacing:0}
 .quoteblock.abstract{margin:0 1em 1.25em;display:block}
 .quoteblock.abstract>.title{margin:0 0 .375em;font-size:1.15em;text-align:center}
 .quoteblock.excerpt>blockquote,.quoteblock .quoteblock{padding:0 0 .25em 1em;border-left:.25em solid #dddddf}
 .quoteblock.excerpt,.quoteblock .quoteblock{margin-left:0}
 .quoteblock.excerpt blockquote,.quoteblock.excerpt p,.quoteblock .quoteblock blockquote,.quoteblock .quoteblock p{color:inherit;font-size:1.0625rem}
 .quoteblock.excerpt .attribution,.quoteblock .quoteblock .attribution{color:inherit;font-size:.85rem;text-align:left;margin-right:0}
 p.tableblock:last-child{margin-bottom:0}
 td.tableblock>.content{margin-bottom:1.25em;word-wrap:anywhere}
 td.tableblock>.content>:last-child{margin-bottom:-1.25em}
 table.tableblock,th.tableblock,td.tableblock{border:0 solid #dedede}
 table.grid-all>*>tr>*{border-width:1px}
 table.grid-cols>*>tr>*{border-width:0 1px}
 table.grid-rows>*>tr>*{border-width:1px 0}
 table.frame-all{border-width:1px}
 table.frame-ends{border-width:1px 0}
 table.frame-sides{border-width:0 1px}
 table.frame-none>colgroup+*>:first-child>*,table.frame-sides>colgroup+*>:first-child>*{border-top-width:0}
 table.frame-none>:last-child>:last-child>*,table.frame-sides>:last-child>:last-child>*{border-bottom-width:0}
 table.frame-none>*>tr>:first-child,table.frame-ends>*>tr>:first-child{border-left-width:0}
 table.frame-none>*>tr>:last-child,table.frame-ends>*>tr>:last-child{border-right-width:0}
 table.stripes-all>*>tr,table.stripes-odd>*>tr:nth-of-type(odd),table.stripes-even>*>tr:nth-of-type(even),table.stripes-hover>*>tr:hover{background:#f8f8f7}
 th.halign-left,td.halign-left{text-align:left}
 th.halign-right,td.halign-right{text-align:right}
 th.halign-center,td.halign-center{text-align:center}
 th.valign-top,td.valign-top{vertical-align:top}
 th.valign-bottom,td.valign-bottom{vertical-align:bottom}
 th.valign-middle,td.valign-middle{vertical-align:middle}
 table thead th,table tfoot th{font-weight:bold}
 tbody tr th{background:#f7f8f7}
 tbody tr th,tbody tr th p,tfoot tr th,tfoot tr th p{color:rgba(0,0,0,.8);font-weight:bold}
 p.tableblock>code:only-child{background:none;padding:0}
 p.tableblock{font-size:1em}
 ol{margin-left:1.75em}
 ul li ol{margin-left:1.5em}
 dl dd{margin-left:1.125em}
 dl dd:last-child,dl dd:last-child>:last-child{margin-bottom:0}
 li p,ul dd,ol dd,.olist .olist,.ulist .ulist,.ulist .olist,.olist .ulist{margin-bottom:.625em}
 ul.checklist,ul.none,ol.none,ul.no-bullet,ol.no-bullet,ol.unnumbered,ul.unstyled,ol.unstyled{list-style-type:none}
 ul.no-bullet,ol.no-bullet,ol.unnumbered{margin-left:.625em}
 ul.unstyled,ol.unstyled{margin-left:0}
 li>p:empty:only-child::before{content:"";display:inline-block}
 ul.checklist>li>p:first-child{margin-left:-1em}
 ul.checklist>li>p:first-child>.fa-square-o:first-child,ul.checklist>li>p:first-child>.fa-check-square-o:first-child{width:1.25em;font-size:.8em;position:relative;bottom:.125em}
 ul.checklist>li>p:first-child>input[type=checkbox]:first-child{margin-right:.25em}
 ul.inline{display:flex;flex-flow:row wrap;list-style:none;margin:0 0 .625em -1.25em}
 ul.inline>li{margin-left:1.25em}
 .unstyled dl dt{font-weight:400;font-style:normal}
 ol.arabic{list-style-type:decimal}
 ol.decimal{list-style-type:decimal-leading-zero}
 ol.loweralpha{list-style-type:lower-alpha}
 ol.upperalpha{list-style-type:upper-alpha}
 ol.lowerroman{list-style-type:lower-roman}
 ol.upperroman{list-style-type:upper-roman}
 ol.lowergreek{list-style-type:lower-greek}
 .hdlist>table,.colist>table{border:0;background:none}
 .hdlist>table>tbody>tr,.colist>table>tbody>tr{background:none}
 td.hdlist1,td.hdlist2{vertical-align:top;padding:0 .625em}
 td.hdlist1{font-weight:bold;padding-bottom:1.25em}
 td.hdlist2{word-wrap:anywhere}
 .literalblock+.colist,.listingblock+.colist{margin-top:-.5em}
 .colist td:not([class]):first-child{padding:.4em .75em 0;line-height:1;vertical-align:top}
 .colist td:not([class]):first-child img{max-width:none}
 .colist td:not([class]):last-child{padding:.25em 0}
 .thumb,.th{line-height:0;display:inline-block;border:4px solid #fff;box-shadow:0 0 0 1px #ddd}
 .imageblock.left{margin:.25em .625em 1.25em 0}
 .imageblock.right{margin:.25em 0 1.25em .625em}
 .imageblock>.title{margin-bottom:0}
 .imageblock.thumb,.imageblock.th{border-width:6px}
 .imageblock.thumb>.title,.imageblock.th>.title{padding:0 .125em}
 .image.left,.image.right{margin-top:.25em;margin-bottom:.25em;display:inline-block;line-height:0}
 .image.left{margin-right:.625em}
 .image.right{margin-left:.625em}
 a.image{text-decoration:none;display:inline-block}
 a.image object{pointer-events:none}
 sup.footnote,sup.footnoteref{font-size:.875em;position:static;vertical-align:super}
 sup.footnote a,sup.footnoteref a{text-decoration:none}
 sup.footnote a:active,sup.footnoteref a:active,#footnotes .footnote a:first-of-type:active{text-decoration:underline}
 #footnotes{padding-top:.75em;padding-bottom:.75em;margin-bottom:.625em}
 #footnotes hr{width:20%;min-width:6.25em;margin:-.25em 0 .75em;border-width:1px 0 0}
 #footnotes .footnote{padding:0 .375em 0 .225em;line-height:1.3334;font-size:.875em;margin-left:1.2em;margin-bottom:.2em}
 #footnotes .footnote a:first-of-type{font-weight:bold;text-decoration:none;margin-left:-1.05em}
 #footnotes .footnote:last-of-type{margin-bottom:0}
 #content #footnotes{margin-top:-.625em;margin-bottom:0;padding:.75em 0}
 div.unbreakable{page-break-inside:avoid}
 .big{font-size:larger}
 .small{font-size:smaller}
 .underline{text-decoration:underline}
 .overline{text-decoration:overline}
 .line-through{text-decoration:line-through}
 .aqua{color:#00bfbf}
 .aqua-background{background:#00fafa}
 .black{color:#000}
 .black-background{background:#000}
 .blue{color:#0000bf}
 .blue-background{background:#0000fa}
 .fuchsia{color:#bf00bf}
 .fuchsia-background{background:#fa00fa}
 .gray{color:#606060}
 .gray-background{background:#7d7d7d}
 .green{color:#006000}
 .green-background{background:#007d00}
 .lime{color:#00bf00}
 .lime-background{background:#00fa00}
 .maroon{color:#600000}
 .maroon-background{background:#7d0000}
 .navy{color:#000060}
 .navy-background{background:#00007d}
 .olive{color:#606000}
 .olive-background{background:#7d7d00}
 .purple{color:#600060}
 .purple-background{background:#7d007d}
 .red{color:#bf0000}
 .red-background{background:#fa0000}
 .silver{color:#909090}
 .silver-background{background:#bcbcbc}
 .teal{color:#006060}
 .teal-background{background:#007d7d}
 .white{color:#bfbfbf}
 .white-background{background:#fafafa}
 .yellow{color:#bfbf00}
 .yellow-background{background:#fafa00}
 span.icon>.fa{cursor:default}
 a span.icon>.fa{cursor:inherit}
 .admonitionblock td.icon [class^="fa icon-"]{font-size:2.5em;text-shadow:1px 1px 2px rgba(0,0,0,.5);cursor:default}
 .admonitionblock td.icon .icon-note::before{content:"\f05a";color:#19407c}
 .admonitionblock td.icon .icon-tip::before{content:"\f0eb";text-shadow:1px 1px 2px rgba(155,155,0,.8);color:#111}
 .admonitionblock td.icon .icon-warning::before{content:"\f071";color:#bf6900}
 .admonitionblock td.icon .icon-caution::before{content:"\f06d";color:#bf3400}
 .admonitionblock td.icon .icon-important::before{content:"\f06a";color:#bf0000}
 .conum[data-value]{display:inline-block;color:#fff!important;background:rgba(0,0,0,.8);border-radius:50%;text-align:center;font-size:.75em;width:1.67em;height:1.67em;line-height:1.67em;font-family:"Open Sans","DejaVu Sans",sans-serif;font-style:normal;font-weight:bold}
 .conum[data-value] *{color:#fff!important}
 .conum[data-value]+b{display:none}
 .conum[data-value]::after{content:attr(data-value)}
 pre .conum[data-value]{position:relative;top:-.125em}
 b.conum *{color:inherit!important}
 .conum:not([data-value]):empty{display:none}
 dt,th.tableblock,td.content,div.footnote{text-rendering:optimizeLegibility}
 h1,h2,p,td.content,span.alt,summary{letter-spacing:-.01em}
 p strong,td.content strong,div.footnote strong{letter-spacing:-.005em}
 p,blockquote,dt,td.content,td.hdlist1,span.alt,summary{font-size:1.0625rem}
 p{margin-bottom:1.25rem}
 .sidebarblock p,.sidebarblock dt,.sidebarblock td.content,p.tableblock{font-size:1em}
 .exampleblock>.content{background:#fffef7;border-color:#e0e0dc;box-shadow:0 1px 4px #e0e0dc}
 .print-only{display:none!important}
 @page{margin:1.25cm .75cm}
 @media print{*{box-shadow:none!important;text-shadow:none!important}
 html{font-size:80%}
 a{color:inherit!important;text-decoration:underline!important}
 a.bare,a[href^="#"],a[href^="mailto:"]{text-decoration:none!important}
 a[href^="http:"]:not(.bare)::after,a[href^="https:"]:not(.bare)::after{content:"(" attr(href) ")";display:inline-block;font-size:.875em;padding-left:.25em}
 abbr[title]{border-bottom:1px dotted}
 abbr[title]::after{content:" (" attr(title) ")"}
 pre,blockquote,tr,img,object,svg{page-break-inside:avoid}
 thead{display:table-header-group}
 svg{max-width:100%}
 p,blockquote,dt,td.content{font-size:1em;orphans:3;widows:3}
 h2,h3,#toctitle,.sidebarblock>.content>.title{page-break-after:avoid}
 #header,#content,#footnotes,#footer{max-width:none}
 #toc,.sidebarblock,.exampleblock>.content{background:none!important}
 #toc{border-bottom:1px solid #dddddf!important;padding-bottom:0!important}
 body.book #header{text-align:center}
 body.book #header>h1:first-child{border:0!important;margin:2.5em 0 1em}
 body.book #header .details{border:0!important;display:block;padding:0!important}
 body.book #header .details span:first-child{margin-left:0!important}
 body.book #header .details br{display:block}
 body.book #header .details br+span::before{content:none!important}
 body.book #toc{border:0!important;text-align:left!important;padding:0!important;margin:0!important}
 body.book #toc,body.book #preamble,body.book h1.sect0,body.book .sect1>h2{page-break-before:always}
 .listingblock code[data-lang]::before{display:block}
 #footer{padding:0 .9375em}
 .hide-on-print{display:none!important}
 .print-only{display:block!important}
 .hide-for-print{display:none!important}
 .show-for-print{display:inherit!important}}
 @media amzn-kf8,print{#header>h1:first-child{margin-top:1.25rem}
 .sect1{padding:0!important}
 .sect1+.sect1{border:0}
 #footer{background:none}
 #footer-text{color:rgba(0,0,0,.6);font-size:.9em}}
 @media amzn-kf8{#header,#content,#footnotes,#footer{padding:0}}
 </style>
 <style>
 pre>code {
    display: inline;
 }
 </style>
 </head>
 <body class="manpage">
 <div id="header">
 <h1>gitattributes(5) Manual Page</h1>
 <h2 id="_name">NAME</h2>
 <div class="sectionbody">
 <p>gitattributes - Defining attributes per path</p>
 </div>
 </div>
 <div id="content">
 <div class="sect1">
 <h2 id="_synopsis">SYNOPSIS</h2>
 <div class="sectionbody">
 <div class="paragraph">
 <p>$GIT_DIR/info/attributes, .gitattributes</p>
 </div>
 </div>
 </div>
 <div class="sect1">
 <h2 id="_description">DESCRIPTION</h2>
 <div class="sectionbody">
 <div class="paragraph">
 <p>A <code>gitattributes</code> file is a simple text file that gives
 <code>attributes</code> to pathnames.</p>
 </div>
 <div class="paragraph">
 <p>Each line in <code>gitattributes</code> file is of form:</p>
 </div>
 <div class="literalblock">
 <div class="content">
 <pre>pattern attr1 attr2 ...</pre>
 </div>
 </div>
 <div class="paragraph">
 <p>That is, a pattern followed by an attributes list,
 separated by whitespaces. Leading and trailing whitespaces are
 ignored. Lines that begin with <em>#</em> are ignored. Patterns
 that begin with a double quote are quoted in C style.
 When the pattern matches the path in question, the attributes
 listed on the line are given to the path.</p>
 </div>
 <div class="paragraph">
 <p>Each attribute can be in one of these states for a given path:</p>
 </div>
 <div class="dlist">
 <dl>
 <dt class="hdlist1">Set</dt>
 <dd>
 <p>The path has the attribute with special value "true";
 this is specified by listing only the name of the
 attribute in the attribute list.</p>
 </dd>
 <dt class="hdlist1">Unset</dt>
 <dd>
 <p>The path has the attribute with special value "false";
 this is specified by listing the name of the attribute
 prefixed with a dash <code>-</code> in the attribute list.</p>
 </dd>
 <dt class="hdlist1">Set to a value</dt>
 <dd>
 <p>The path has the attribute with specified string value;
 this is specified by listing the name of the attribute
 followed by an equal sign <code>=</code> and its value in the
 attribute list.</p>
 </dd>
 <dt class="hdlist1">Unspecified</dt>
 <dd>
 <p>No pattern matches the path, and nothing says if
 the path has or does not have the attribute, the
 attribute for the path is said to be Unspecified.</p>
 </dd>
 </dl>
 </div>
 <div class="paragraph">
 <p>When more than one pattern matches the path, a later line
 overrides an earlier line.  This overriding is done per
 attribute.</p>
 </div>
 <div class="paragraph">
 <p>The rules by which the pattern matches paths are the same as in
 .<code>gitignore</code> files (see <a href="gitignore.html">gitignore(5)</a>), with a few exceptions:</p>
 </div>
 <div class="ulist">
 <ul>
 <li>
 <p>negative patterns are forbidden</p>
 </li>
 <li>
 <p>patterns that match a directory do not recursively match paths
 inside that directory (so using the trailing-slash <code>path/</code> syntax is
 pointless in an attributes file; use <code>path/**</code> instead)</p>
 </li>
 </ul>
 </div>
 <div class="paragraph">
 <p>When deciding what attributes are assigned to a path, Git
 consults <code>$GIT_DIR/info/attributes</code> file (which has the highest
 precedence), .<code>gitattributes</code> file in the same directory as the
 path in question, and its parent directories up to the toplevel of the
 work tree (the further the directory that contains .<code>gitattributes</code>
 is from the path in question, the lower its precedence). Finally
 global and system-wide files are considered (they have the lowest
 precedence).</p>
 </div>
 <div class="paragraph">
 <p>When the .<code>gitattributes</code> file is missing from the work tree, the
 path in the index is used as a fall-back.  During checkout process,
 .<code>gitattributes</code> in the index is used and then the file in the
 working tree is used as a fall-back.</p>
 </div>
 <div class="paragraph">
 <p>If you wish to affect only a single repository (i.e., to assign
 attributes to files that are particular to
 one user&#8217;s workflow for that repository), then
 attributes should be placed in the <code>$GIT_DIR/info/attributes</code> file.
 Attributes which should be version-controlled and distributed to other
 repositories (i.e., attributes of interest to all users) should go into
 .<code>gitattributes</code> files. Attributes that should affect all repositories
 for a single user should be placed in a file specified by the
 <code>core.attributesFile</code> configuration option (see <a href="git-config.html">git-config(1)</a>).
 Its default value is $XDG_CONFIG_HOME/git/attributes. If $XDG_CONFIG_HOME
 is either not set or empty, $HOME/.config/git/attributes is used instead.
 Attributes for all users on a system should be placed in the
 <code>$</code>(<code>prefix</code>)<code>/etc/gitattributes</code> file.</p>
 </div>
 <div class="paragraph">
 <p>Sometimes you would need to override a setting of an attribute
 for a path to <code>Unspecified</code> state.  This can be done by listing
 the name of the attribute prefixed with an exclamation point !.</p>
 </div>
 </div>
 </div>
 <div class="sect1">
 <h2 id="_reserved_builtin_attributes">RESERVED BUILTIN_* ATTRIBUTES</h2>
 <div class="sectionbody">
 <div class="paragraph">
 <p>builtin_* is a reserved namespace for builtin attribute values. Any
 user defined attributes under this namespace will be ignored and
 trigger a warning.</p>
 </div>
 <div class="sect2">
 <h3 id="_builtin_objectmode"><code>builtin_objectmode</code></h3>
 <div class="paragraph">
 <p>This attribute is for filtering files by their file bit modes (40000,
 120000, 160000, 100755, 100644). e.g. <em>:(attr:builtin_objectmode=160000)</em>.
 You may also check these values with <code>git</code> <code>check-attr</code> <code>builtin_objectmode</code> <code>--</code> <em>&lt;file&gt;</em>.
 If the object is not in the index <code>git</code> <code>check-attr</code> <code>--cached</code> will return unspecified.</p>
 </div>
 </div>
 </div>
 </div>
 <div class="sect1">
 <h2 id="_effects">EFFECTS</h2>
 <div class="sectionbody">
 <div class="paragraph">
 <p>Certain operations by Git can be influenced by assigning
 particular attributes to a path.  Currently, the following
 operations are attributes-aware.</p>
 </div>
 <div class="sect2">
 <h3 id="_checking_out_and_checking_in">Checking-out and checking-in</h3>
 <div class="paragraph">
 <p>These attributes affect how the contents stored in the
 repository are copied to the working tree files when commands
 such as <em>git switch</em>, <em>git checkout</em>  and <em>git merge</em> run.
 They also affect how
 Git stores the contents you prepare in the working tree in the
 repository upon <em>git add</em> and <em>git commit</em>.</p>
 </div>
 <div class="sect3">
 <h4 id="_text"><code>text</code></h4>
 <div class="paragraph">
 <p>This attribute marks the path as a text file, which enables end-of-line
 conversion: When a matching file is added to the index, the file&#8217;s line
 endings are normalized to LF in the index.  Conversely, when the file is
 copied from the index to the working directory, its line endings may be
 converted from LF to CRLF depending on the <code>eol</code> attribute, the Git
 config, and the platform (see explanation of <code>eol</code> below).</p>
 </div>
 <div class="dlist">
 <dl>
 <dt class="hdlist1">Set</dt>
 <dd>
 <p>Setting the <code>text</code> attribute on a path enables end-of-line
 conversion on checkin and checkout as described above.  Line endings
 are normalized to LF in the index every time the file is checked in,
 even if the file was previously added to Git with CRLF line endings.</p>
 </dd>
 <dt class="hdlist1">Unset</dt>
 <dd>
 <p>Unsetting the <code>text</code> attribute on a path tells Git not to
 attempt any end-of-line conversion upon checkin or checkout.</p>
 </dd>
 <dt class="hdlist1">Set to string value "auto"</dt>
 <dd>
 <p>When <code>text</code> is set to "auto", Git decides by itself whether the file
 is text or binary.  If it is text and the file was not already in
 Git with CRLF endings, line endings are converted on checkin and
 checkout as described above.  Otherwise, no conversion is done on
 checkin or checkout.</p>
 </dd>
 <dt class="hdlist1">Unspecified</dt>
 <dd>
 <p>If the <code>text</code> attribute is unspecified, Git uses the
 <code>core.autocrlf</code> configuration variable to determine if the
 file should be converted.</p>
 </dd>
 </dl>
 </div>
 <div class="paragraph">
 <p>Any other value causes Git to act as if <code>text</code> has been left
 unspecified.</p>
 </div>
 </div>
 <div class="sect3">
 <h4 id="_eol"><code>eol</code></h4>
 <div class="paragraph">
 <p>This attribute marks a path to use a specific line-ending style in the
 working tree when it is checked out.  It has effect only if <code>text</code> or
 <code>text=auto</code> is set (see above), but specifying <code>eol</code> automatically sets
 <code>text</code> if <code>text</code> was left unspecified.</p>
 </div>
 <div class="dlist">
 <dl>
 <dt class="hdlist1">Set to string value "crlf"</dt>
 <dd>
 <p>This setting converts the file&#8217;s line endings in the working
 directory to CRLF when the file is checked out.</p>
 </dd>
 <dt class="hdlist1">Set to string value "lf"</dt>
 <dd>
 <p>This setting uses the same line endings in the working directory as
 in the index when the file is checked out.</p>
 </dd>
 <dt class="hdlist1">Unspecified</dt>
 <dd>
 <p>If the <code>eol</code> attribute is unspecified for a file, its line endings
 in the working directory are determined by the <code>core.autocrlf</code> or
 <code>core.eol</code> configuration variable (see the definitions of those
 options in <a href="git-config.html">git-config(1)</a>).  If <code>text</code> is set but neither of
 those variables is, the default is <code>eol=crlf</code> on Windows and
 <code>eol=lf</code> on all other platforms.</p>
 </dd>
 </dl>
 </div>
 </div>
 <div class="sect3">
 <h4 id="_backwards_compatibility_with_crlf_attribute">Backwards compatibility with <code>crlf</code> attribute</h4>
 <div class="paragraph">
 <p>For backwards compatibility, the <code>crlf</code> attribute is interpreted as
 follows:</p>
 </div>
 <div class="listingblock">
 <div class="content">
 <pre>crlf            text
 -crlf           -text
 crlf=input      eol=lf</pre>
 </div>
 </div>
 </div>
 <div class="sect3">
 <h4 id="_end_of_line_conversion">End-of-line conversion</h4>
 <div class="paragraph">
 <p>While Git normally leaves file contents alone, it can be configured to
 normalize line endings to LF in the repository and, optionally, to
 convert them to CRLF when files are checked out.</p>
 </div>
 <div class="paragraph">
 <p>If you simply want to have CRLF line endings in your working directory
 regardless of the repository you are working with, you can set the
 config variable "core.autocrlf" without using any attributes.</p>
 </div>
 <div class="listingblock">
 <div class="content">
 <pre>[core]
         autocrlf = true</pre>
 </div>
 </div>
 <div class="paragraph">
 <p>This does not force normalization of text files, but does ensure
 that text files that you introduce to the repository have their line
 endings normalized to LF when they are added, and that files that are
 already normalized in the repository stay normalized.</p>
 </div>
 <div class="paragraph">
 <p>If you want to ensure that text files that any contributor introduces to
 the repository have their line endings normalized, you can set the
 <code>text</code> attribute to "auto" for <em>all</em> files.</p>
 </div>
 <div class="listingblock">
 <div class="content">
 <pre>*       text=auto</pre>
 </div>
 </div>
 <div class="paragraph">
 <p>The attributes allow a fine-grained control, how the line endings
 are converted.
 Here is an example that will make Git normalize .txt, .vcproj and .sh
 files, ensure that .vcproj files have CRLF and .sh files have LF in
 the working directory, and prevent .jpg files from being normalized
 regardless of their content.</p>
 </div>
 <div class="listingblock">
 <div class="content">
 <pre>*               text=auto
 *.txt           text
 *.vcproj        text eol=crlf
 *.sh            text eol=lf
 *.jpg           -text</pre>
 </div>
 </div>
 <div class="admonitionblock note">
 <table>
 <tr>
 <td class="icon">
 <div class="title">Note</div>
 </td>
 <td class="content">
 When <code>text=auto</code> conversion is enabled in a cross-platform
 project using push and pull to a central repository the text files
 containing CRLFs should be normalized.
 </td>
 </tr>
 </table>
 </div>
 <div class="paragraph">
 <p>From a clean working directory:</p>
 </div>
 <div class="listingblock">
 <div class="content">
 <pre>$ echo "* text=auto" &gt;.gitattributes
 $ git add --renormalize .
 $ git status        # Show files that will be normalized
 $ git commit -m "Introduce end-of-line normalization"</pre>
 </div>
 </div>
 <div class="paragraph">
 <p>If any files that should not be normalized show up in <em>git status</em>,
 unset their <code>text</code> attribute before running <em>git add -u</em>.</p>
 </div>
 <div class="listingblock">
 <div class="content">
 <pre>manual.pdf      -text</pre>
 </div>
 </div>
 <div class="paragraph">
 <p>Conversely, text files that Git does not detect can have normalization
 enabled manually.</p>
 </div>
 <div class="listingblock">
 <div class="content">
 <pre>weirdchars.txt  text</pre>
 </div>
 </div>
 <div class="paragraph">
 <p>If <code>core.safecrlf</code> is set to "true" or "warn", Git verifies if
 the conversion is reversible for the current setting of
 <code>core.autocrlf</code>.  For "true", Git rejects irreversible
 conversions; for "warn", Git only prints a warning but accepts
 an irreversible conversion.  The safety triggers to prevent such
 a conversion done to the files in the work tree, but there are a
 few exceptions.  Even though&#8230;&#8203;</p>
 </div>
 <div class="ulist">
 <ul>
 <li>
 <p><em>git add</em> itself does not touch the files in the work tree, the
 next checkout would, so the safety triggers;</p>
 </li>
 <li>
 <p><em>git apply</em> to update a text file with a patch does touch the files
 in the work tree, but the operation is about text files and CRLF
 conversion is about fixing the line ending inconsistencies, so the
 safety does not trigger;</p>
 </li>
 <li>
 <p><em>git diff</em> itself does not touch the files in the work tree, it is
 often run to inspect the changes you intend to next <em>git add</em>.  To
 catch potential problems early, safety triggers.</p>
 </li>
 </ul>
 </div>
 </div>
 <div class="sect3">
 <h4 id="_working_tree_encoding"><code>working-tree-encoding</code></h4>
 <div class="paragraph">
 <p>Git recognizes files encoded in ASCII or one of its supersets (e.g.
 UTF-8, ISO-8859-1, &#8230;&#8203;) as text files. Files encoded in certain other
 encodings (e.g. UTF-16) are interpreted as binary and consequently
 built-in Git text processing tools (e.g. <em>git diff</em>) as well as most Git
 web front ends do not visualize the contents of these files by default.</p>
 </div>
 <div class="paragraph">
 <p>In these cases you can tell Git the encoding of a file in the working
 directory with the <code>working-tree-encoding</code> attribute. If a file with this
 attribute is added to Git, then Git re-encodes the content from the
 specified encoding to UTF-8. Finally, Git stores the UTF-8 encoded
 content in its internal data structure (called "the index"). On checkout
 the content is re-encoded back to the specified encoding.</p>
 </div>
 <div class="paragraph">
 <p>Please note that using the <code>working-tree-encoding</code> attribute may have a
 number of pitfalls:</p>
 </div>
 <div class="ulist">
 <ul>
 <li>
 <p>Alternative Git implementations (e.g. JGit or libgit2) and older Git
 versions (as of March 2018) do not support the <code>working-tree-encoding</code>
 attribute. If you decide to use the <code>working-tree-encoding</code> attribute
 in your repository, then it is strongly recommended to ensure that all
 clients working with the repository support it.</p>
 <div class="paragraph">
 <p>For example, Microsoft Visual Studio resources files (<code>*.rc</code>) or
 PowerShell script files (<code>*.ps1</code>) are sometimes encoded in UTF-16.
 If you declare <code>*.ps1</code> as files as UTF-16 and you add <code>foo.ps1</code> with
 a <code>working-tree-encoding</code> enabled Git client, then <code>foo.ps1</code> will be
 stored as UTF-8 internally. A client without <code>working-tree-encoding</code>
 support will checkout <code>foo.ps1</code> as UTF-8 encoded file. This will
 typically cause trouble for the users of this file.</p>
 </div>
 <div class="paragraph">
 <p>If a Git client that does not support the <code>working-tree-encoding</code>
 attribute adds a new file <code>bar.ps1</code>, then <code>bar.ps1</code> will be
 stored "as-is" internally (in this example probably as UTF-16).
 A client with <code>working-tree-encoding</code> support will interpret the
 internal contents as UTF-8 and try to convert it to UTF-16 on checkout.
 That operation will fail and cause an error.</p>
 </div>
 </li>
 <li>
 <p>Reencoding content to non-UTF encodings can cause errors as the
 conversion might not be UTF-8 round trip safe. If you suspect your
 encoding to not be round trip safe, then add it to
 <code>core.checkRoundtripEncoding</code> to make Git check the round trip
 encoding (see <a href="git-config.html">git-config(1)</a>). SHIFT-JIS (Japanese character
 set) is known to have round trip issues with UTF-8 and is checked by
 default.</p>
 </li>
 <li>
 <p>Reencoding content requires resources that might slow down certain
 Git operations (e.g <em>git checkout</em> or <em>git add</em>).</p>
 </li>
 </ul>
 </div>
 <div class="paragraph">
 <p>Use the <code>working-tree-encoding</code> attribute only if you cannot store a file
 in UTF-8 encoding and if you want Git to be able to process the content
 as text.</p>
 </div>
 <div class="paragraph">
 <p>As an example, use the following attributes if your <em>*.ps1</em> files are
 UTF-16 encoded with byte order mark (BOM) and you want Git to perform
 automatic line ending conversion based on your platform.</p>
 </div>
 <div class="listingblock">
 <div class="content">
 <pre>*.ps1           text working-tree-encoding=UTF-16</pre>
 </div>
 </div>
 <div class="paragraph">
 <p>Use the following attributes if your <em>*.ps1</em> files are UTF-16 little
 endian encoded without BOM and you want Git to use Windows line endings
 in the working directory (use <code>UTF-16LE-BOM</code> instead of <code>UTF-16LE</code> if
 you want UTF-16 little endian with BOM).
 Please note, it is highly recommended to
 explicitly define the line endings with <code>eol</code> if the <code>working-tree-encoding</code>
 attribute is used to avoid ambiguity.</p>
 </div>
 <div class="listingblock">
 <div class="content">
 <pre>*.ps1           text working-tree-encoding=UTF-16LE eol=crlf</pre>
 </div>
 </div>
 <div class="paragraph">
 <p>You can get a list of all available encodings on your platform with the
 following command:</p>
 </div>
 <div class="listingblock">
 <div class="content">
 <pre>iconv --list</pre>
 </div>
 </div>
 <div class="paragraph">
 <p>If you do not know the encoding of a file, then you can use the <code>file</code>
 command to guess the encoding:</p>
 </div>
 <div class="listingblock">
 <div class="content">
 <pre>file foo.ps1</pre>
 </div>
 </div>
 </div>
 <div class="sect3">
 <h4 id="_ident"><code>ident</code></h4>
 <div class="paragraph">
 <p>When the attribute <code>ident</code> is set for a path, Git replaces
 <code>$Id$</code> in the blob object with <code>$Id:</code>, followed by the
 40-character hexadecimal blob object name, followed by a dollar
 sign <code>$</code> upon checkout.  Any byte sequence that begins with
 <code>$Id:</code> and ends with <code>$</code> in the worktree file is replaced
 with <code>$Id$</code> upon check-in.</p>
 </div>
 </div>
 <div class="sect3">
 <h4 id="_filter"><code>filter</code></h4>
 <div class="paragraph">
 <p>A <code>filter</code> attribute can be set to a string value that names a
 filter driver specified in the configuration.</p>
 </div>
 <div class="paragraph">
 <p>A filter driver consists of a <code>clean</code> command and a <code>smudge</code>
 command, either of which can be left unspecified.  Upon
 checkout, when the <code>smudge</code> command is specified, the command is
 fed the blob object from its standard input, and its standard
 output is used to update the worktree file.  Similarly, the
 <code>clean</code> command is used to convert the contents of worktree file
 upon checkin. By default these commands process only a single
 blob and terminate. If a long running <code>process</code> filter is used
 in place of <code>clean</code> and/or <code>smudge</code> filters, then Git can process
 all blobs with a single filter command invocation for the entire
 life of a single Git command, for example <code>git</code> <code>add</code> <code>--all</code>. If a
 long running <code>process</code> filter is configured then it always takes
 precedence over a configured single blob filter. See section
 below for the description of the protocol used to communicate with
 a <code>process</code> filter.</p>
 </div>
 <div class="paragraph">
 <p>One use of the content filtering is to massage the content into a shape
 that is more convenient for the platform, filesystem, and the user to use.
 For this mode of operation, the key phrase here is "more convenient" and
 not "turning something unusable into usable".  In other words, the intent
 is that if someone unsets the filter driver definition, or does not have
 the appropriate filter program, the project should still be usable.</p>
 </div>
 <div class="paragraph">
 <p>Another use of the content filtering is to store the content that cannot
 be directly used in the repository (e.g. a UUID that refers to the true
 content stored outside Git, or an encrypted content) and turn it into a
 usable form upon checkout (e.g. download the external content, or decrypt
 the encrypted content).</p>
 </div>
 <div class="paragraph">
 <p>These two filters behave differently, and by default, a filter is taken as
 the former, massaging the contents into more convenient shape.  A missing
 filter driver definition in the config, or a filter driver that exits with
 a non-zero status, is not an error but makes the filter a no-op passthru.</p>
 </div>
 <div class="paragraph">
 <p>You can declare that a filter turns a content that by itself is unusable
 into a usable content by setting the filter.&lt;driver&gt;.required configuration
 variable to <code>true</code>.</p>
 </div>
 <div class="paragraph">
 <p>Note: Whenever the clean filter is changed, the repo should be renormalized:
 $ git add --renormalize .</p>
 </div>
 <div class="paragraph">
 <p>For example, in .gitattributes, you would assign the <code>filter</code>
 attribute for paths.</p>
 </div>
 <div class="listingblock">
 <div class="content">
 <pre>*.c     filter=indent</pre>
 </div>
 </div>
 <div class="paragraph">
 <p>Then you would define a "filter.indent.clean" and "filter.indent.smudge"
 configuration in your .git/config to specify a pair of commands to
 modify the contents of C programs when the source files are checked
 in ("clean" is run) and checked out (no change is made because the
 command is "cat").</p>
 </div>
 <div class="listingblock">
 <div class="content">
 <pre>[filter "indent"]
         clean = indent
         smudge = cat</pre>
 </div>
 </div>
 <div class="paragraph">
 <p>For best results, <code>clean</code> should not alter its output further if it is
 run twice ("clean&#8594;clean" should be equivalent to "clean"), and
 multiple <code>smudge</code> commands should not alter <code>clean</code>'s output
 ("smudge&#8594;smudge&#8594;clean" should be equivalent to "clean").  See the
 section on merging below.</p>
 </div>
 <div class="paragraph">
 <p>The "indent" filter is well-behaved in this regard: it will not modify
 input that is already correctly indented.  In this case, the lack of a
 smudge filter means that the clean filter <em>must</em> accept its own output
 without modifying it.</p>
 </div>
 <div class="paragraph">
 <p>If a filter <em>must</em> succeed in order to make the stored contents usable,
 you can declare that the filter is <code>required</code>, in the configuration:</p>
 </div>
 <div class="listingblock">
 <div class="content">
 <pre>[filter "crypt"]
         clean = openssl enc ...
         smudge = openssl enc -d ...
         required</pre>
 </div>
 </div>
 <div class="paragraph">
 <p>Sequence "%f" on the filter command line is replaced with the name of
 the file the filter is working on.  A filter might use this in keyword
 substitution.  For example:</p>
 </div>
 <div class="listingblock">
 <div class="content">
 <pre>[filter "p4"]
         clean = git-p4-filter --clean %f
         smudge = git-p4-filter --smudge %f</pre>
 </div>
 </div>
 <div class="paragraph">
 <p>Note that "%f" is the name of the path that is being worked on. Depending
 on the version that is being filtered, the corresponding file on disk may
 not exist, or may have different contents. So, smudge and clean commands
 should not try to access the file on disk, but only act as filters on the
 content provided to them on standard input.</p>
 </div>
 </div>
 <div class="sect3">
 <h4 id="_long_running_filter_process">Long Running Filter Process</h4>
 <div class="paragraph">
 <p>If the filter command (a string value) is defined via
 <code>filter.</code><em>&lt;driver&gt;</em><code>.process</code> then Git can process all blobs with a
 single filter invocation for the entire life of a single Git
 command. This is achieved by using the long-running process protocol
 (described in Documentation/technical/long-running-process-protocol.adoc).</p>
 </div>
 <div class="paragraph">
 <p>When Git encounters the first file that needs to be cleaned or smudged,
 it starts the filter and performs the handshake. In the handshake, the
 welcome message sent by Git is "git-filter-client", only version 2 is
 supported, and the supported capabilities are "clean", "smudge", and
 "delay".</p>
 </div>
 <div class="paragraph">
 <p>Afterwards Git sends a list of "key=value" pairs terminated with
 a flush packet. The list will contain at least the filter command
 (based on the supported capabilities) and the pathname of the file
 to filter relative to the repository root. Right after the flush packet
 Git sends the content split in zero or more pkt-line packets and a
 flush packet to terminate content. Please note, that the filter
 must not send any response before it received the content and the
 final flush packet. Also note that the "value" of a "key=value" pair
 can contain the "=" character whereas the key would never contain
 that character.</p>
 </div>
 <div class="listingblock">
 <div class="content">
 <pre>packet:          git&gt; command=smudge
 packet:          git&gt; pathname=path/testfile.dat
 packet:          git&gt; 0000
 packet:          git&gt; CONTENT
 packet:          git&gt; 0000</pre>
 </div>
 </div>
 <div class="paragraph">
 <p>The filter is expected to respond with a list of "key=value" pairs
 terminated with a flush packet. If the filter does not experience
 problems then the list must contain a "success" status. Right after
 these packets the filter is expected to send the content in zero
 or more pkt-line packets and a flush packet at the end. Finally, a
 second list of "key=value" pairs terminated with a flush packet
 is expected. The filter can change the status in the second list
 or keep the status as is with an empty list. Please note that the
 empty list must be terminated with a flush packet regardless.</p>
 </div>
 <div class="listingblock">
 <div class="content">
 <pre>packet:          git&lt; status=success
 packet:          git&lt; 0000
 packet:          git&lt; SMUDGED_CONTENT
 packet:          git&lt; 0000
 packet:          git&lt; 0000  # empty list, keep "status=success" unchanged!</pre>
 </div>
 </div>
 <div class="paragraph">
 <p>If the result content is empty then the filter is expected to respond
 with a "success" status and a flush packet to signal the empty content.</p>
 </div>
 <div class="listingblock">
 <div class="content">
 <pre>packet:          git&lt; status=success
 packet:          git&lt; 0000
 packet:          git&lt; 0000  # empty content!
 packet:          git&lt; 0000  # empty list, keep "status=success" unchanged!</pre>
 </div>
 </div>
 <div class="paragraph">
 <p>In case the filter cannot or does not want to process the content,
 it is expected to respond with an "error" status.</p>
 </div>
 <div class="listingblock">
 <div class="content">
 <pre>packet:          git&lt; status=error
 packet:          git&lt; 0000</pre>
 </div>
 </div>
 <div class="paragraph">
 <p>If the filter experiences an error during processing, then it can
 send the status "error" after the content was (partially or
 completely) sent.</p>
 </div>
 <div class="listingblock">
 <div class="content">
 <pre>packet:          git&lt; status=success
 packet:          git&lt; 0000
 packet:          git&lt; HALF_WRITTEN_ERRONEOUS_CONTENT
 packet:          git&lt; 0000
 packet:          git&lt; status=error
 packet:          git&lt; 0000</pre>
 </div>
 </div>
 <div class="paragraph">
 <p>In case the filter cannot or does not want to process the content
 as well as any future content for the lifetime of the Git process,
 then it is expected to respond with an "abort" status at any point
 in the protocol.</p>
 </div>
 <div class="listingblock">
 <div class="content">
 <pre>packet:          git&lt; status=abort
 packet:          git&lt; 0000</pre>
 </div>
 </div>
 <div class="paragraph">
 <p>Git neither stops nor restarts the filter process in case the
 "error"/"abort" status is set. However, Git sets its exit code
 according to the <code>filter.</code><em>&lt;driver&gt;</em><code>.required</code> flag, mimicking the
 behavior of the <code>filter.</code><em>&lt;driver&gt;</em><code>.clean</code> / <code>filter.</code><em>&lt;driver&gt;</em><code>.smudge</code>
 mechanism.</p>
 </div>
 <div class="paragraph">
 <p>If the filter dies during the communication or does not adhere to
 the protocol then Git will stop the filter process and restart it
 with the next file that needs to be processed. Depending on the
 <code>filter.</code><em>&lt;driver&gt;</em><code>.required</code> flag Git will interpret that as error.</p>
 </div>
 </div>
 <div class="sect3">
 <h4 id="_delay">Delay</h4>
 <div class="paragraph">
 <p>If the filter supports the "delay" capability, then Git can send the
 flag "can-delay" after the filter command and pathname. This flag
 denotes that the filter can delay filtering the current blob (e.g. to
 compensate network latencies) by responding with no content but with
 the status "delayed" and a flush packet.</p>
 </div>
 <div class="listingblock">
 <div class="content">
 <pre>packet:          git&gt; command=smudge
 packet:          git&gt; pathname=path/testfile.dat
 packet:          git&gt; can-delay=1
 packet:          git&gt; 0000
 packet:          git&gt; CONTENT
 packet:          git&gt; 0000
 packet:          git&lt; status=delayed
 packet:          git&lt; 0000</pre>
 </div>
 </div>
 <div class="paragraph">
 <p>If the filter supports the "delay" capability then it must support the
 "list_available_blobs" command. If Git sends this command, then the
 filter is expected to return a list of pathnames representing blobs
 that have been delayed earlier and are now available.
 The list must be terminated with a flush packet followed
 by a "success" status that is also terminated with a flush packet. If
 no blobs for the delayed paths are available, yet, then the filter is
 expected to block the response until at least one blob becomes
 available. The filter can tell Git that it has no more delayed blobs
 by sending an empty list. As soon as the filter responds with an empty
 list, Git stops asking. All blobs that Git has not received at this
 point are considered missing and will result in an error.</p>
 </div>
 <div class="listingblock">
 <div class="content">
 <pre>packet:          git&gt; command=list_available_blobs
 packet:          git&gt; 0000
 packet:          git&lt; pathname=path/testfile.dat
 packet:          git&lt; pathname=path/otherfile.dat
 packet:          git&lt; 0000
 packet:          git&lt; status=success
 packet:          git&lt; 0000</pre>
 </div>
 </div>
 <div class="paragraph">
 <p>After Git received the pathnames, it will request the corresponding
 blobs again. These requests contain a pathname and an empty content
 section. The filter is expected to respond with the smudged content
 in the usual way as explained above.</p>
 </div>
 <div class="listingblock">
 <div class="content">
 <pre>packet:          git&gt; command=smudge
 packet:          git&gt; pathname=path/testfile.dat
 packet:          git&gt; 0000
 packet:          git&gt; 0000  # empty content!
 packet:          git&lt; status=success
 packet:          git&lt; 0000
 packet:          git&lt; SMUDGED_CONTENT
 packet:          git&lt; 0000
 packet:          git&lt; 0000  # empty list, keep "status=success" unchanged!</pre>
 </div>
 </div>
 </div>
 <div class="sect3">
 <h4 id="_example">Example</h4>
 <div class="paragraph">
 <p>A long running filter demo implementation can be found in
 <code>contrib/long-running-filter/example.pl</code> located in the Git
 core repository. If you develop your own long running filter
 process then the <code>GIT_TRACE_PACKET</code> environment variables can be
 very helpful for debugging (see <a href="git.html">git(1)</a>).</p>
 </div>
 <div class="paragraph">
 <p>Please note that you cannot use an existing <code>filter.</code><em>&lt;driver&gt;</em><code>.clean</code>
 or <code>filter.</code><em>&lt;driver&gt;</em><code>.smudge</code> command with <code>filter.</code><em>&lt;driver&gt;</em><code>.process</code>
 because the former two use a different inter process communication
 protocol than the latter one.</p>
 </div>
 </div>
 <div class="sect3">
 <h4 id="_interaction_between_checkincheckout_attributes">Interaction between checkin/checkout attributes</h4>
 <div class="paragraph">
 <p>In the check-in codepath, the worktree file is first converted
 with <code>filter</code> driver (if specified and corresponding driver
 defined), then the result is processed with <code>ident</code> (if
 specified), and then finally with <code>text</code> (again, if specified
 and applicable).</p>
 </div>
 <div class="paragraph">
 <p>In the check-out codepath, the blob content is first converted
 with <code>text</code>, and then <code>ident</code> and fed to <code>filter</code>.</p>
 </div>
 </div>
 <div class="sect3">
 <h4 id="_merging_branches_with_differing_checkincheckout_attributes">Merging branches with differing checkin/checkout attributes</h4>
 <div class="paragraph">
 <p>If you have added attributes to a file that cause the canonical
 repository format for that file to change, such as adding a
 clean/smudge filter or text/eol/ident attributes, merging anything
 where the attribute is not in place would normally cause merge
 conflicts.</p>
 </div>
 <div class="paragraph">
 <p>To prevent these unnecessary merge conflicts, Git can be told to run a
 virtual check-out and check-in of all three stages of each file that
 needs a three-way content merge, by setting the <code>merge.renormalize</code>
 configuration variable.  This prevents changes caused by check-in
 conversion from causing spurious merge conflicts when a converted file
 is merged with an unconverted file.</p>
 </div>
 <div class="paragraph">
 <p>As long as a "smudge&#8594;clean" results in the same output as a "clean"
 even on files that are already smudged, this strategy will
 automatically resolve all filter-related conflicts.  Filters that do
 not act in this way may cause additional merge conflicts that must be
 resolved manually.</p>
 </div>
 </div>
 </div>
 <div class="sect2">
 <h3 id="_generating_diff_text">Generating diff text</h3>
 <div class="sect3">
 <h4 id="_diff"><code>diff</code></h4>
 <div class="paragraph">
 <p>The attribute <code>diff</code> affects how Git generates diffs for particular
 files. It can tell Git whether to generate a textual patch for the path
 or to treat the path as a binary file.  It can also affect what line is
 shown on the hunk header <code>@@</code> <code>-k,l</code> <code>+n,m</code> <code>@@</code> line, tell Git to use an
 external command to generate the diff, or ask Git to convert binary
 files to a text format before generating the diff.</p>
 </div>
 <div class="dlist">
 <dl>
 <dt class="hdlist1">Set</dt>
 <dd>
 <p>A path to which the <code>diff</code> attribute is set is treated
 as text, even when they contain byte values that
 normally never appear in text files, such as NUL.</p>
 </dd>
 <dt class="hdlist1">Unset</dt>
 <dd>
 <p>A path to which the <code>diff</code> attribute is unset will
 generate <code>Binary</code> <code>files</code> <code>differ</code> (or a binary patch, if
 binary patches are enabled).</p>
 </dd>
 <dt class="hdlist1">Unspecified</dt>
 <dd>
 <p>A path to which the <code>diff</code> attribute is unspecified
 first gets its contents inspected, and if it looks like
 text and is smaller than core.bigFileThreshold, it is treated
 as text. Otherwise it would generate <code>Binary</code> <code>files</code> <code>differ</code>.</p>
 </dd>
 <dt class="hdlist1">String</dt>
 <dd>
 <p>Diff is shown using the specified diff driver.  Each driver may
 specify one or more options, as described in the following
 section. The options for the diff driver "foo" are defined
 by the configuration variables in the "diff.foo" section of the
 Git config file.</p>
 </dd>
 </dl>
 </div>
 </div>
 <div class="sect3">
 <h4 id="_defining_an_external_diff_driver">Defining an external diff driver</h4>
 <div class="paragraph">
 <p>The definition of a diff driver is done in <code>gitconfig</code>, not
 <code>gitattributes</code> file, so strictly speaking this manual page is a
 wrong place to talk about it.  However&#8230;&#8203;</p>
 </div>
 <div class="paragraph">
 <p>To define an external diff driver <code>jcdiff</code>, add a section to your
 <code>$GIT_DIR/config</code> file (or <code>$HOME/.gitconfig</code> file) like this:</p>
 </div>
 <div class="listingblock">
 <div class="content">
 <pre>[diff "jcdiff"]
         command = j-c-diff</pre>
 </div>
 </div>
 <div class="paragraph">
 <p>When Git needs to show you a diff for the path with <code>diff</code>
 attribute set to <code>jcdiff</code>, it calls the command you specified
 with the above configuration, i.e. <code>j-c-diff</code>, with 7
 parameters, just like <code>GIT_EXTERNAL_DIFF</code> program is called.
 See <a href="git.html">git(1)</a> for details.</p>
 </div>
 <div class="paragraph">
 <p>If the program is able to ignore certain changes (similar to
 <code>git</code> <code>diff</code> <code>--ignore-space-change</code>), then also set the option
 <code>trustExitCode</code> to true.  It is then expected to return exit code 1 if
 it finds significant changes and 0 if it doesn&#8217;t.</p>
 </div>
 </div>
 <div class="sect3">
 <h4 id="_setting_the_internal_diff_algorithm">Setting the internal diff algorithm</h4>
 <div class="paragraph">
 <p>The diff algorithm can be set through the <code>diff.algorithm</code> config key, but
 sometimes it may be helpful to set the diff algorithm per path. For example,
 one may want to use the <code>minimal</code> diff algorithm for .json files, and the
 <code>histogram</code> for .c files, and so on without having to pass in the algorithm
 through the command line each time.</p>
 </div>
 <div class="paragraph">
 <p>First, in .<code>gitattributes</code>, assign the <code>diff</code> attribute for paths.</p>
 </div>
 <div class="listingblock">
 <div class="content">
 <pre>*.json diff=&lt;name&gt;</pre>
 </div>
 </div>
 <div class="paragraph">
 <p>Then, define a "diff.&lt;name&gt;.algorithm" configuration to specify the diff
 algorithm, choosing from <code>myers</code>, <code>patience</code>, <code>minimal</code>, or <code>histogram</code>.</p>
 </div>
 <div class="listingblock">
 <div class="content">
 <pre>[diff "&lt;name&gt;"]
   algorithm = histogram</pre>
 </div>
 </div>
 <div class="paragraph">
 <p>This diff algorithm applies to user facing diff output like git-diff(1),
 git-show(1) and is used for the <code>--stat</code> output as well. The merge machinery
 will not use the diff algorithm set through this method.</p>
 </div>
 <div class="admonitionblock note">
 <table>
 <tr>
 <td class="icon">
 <div class="title">Note</div>
 </td>
 <td class="content">
 If <code>diff.</code><em>&lt;name&gt;</em><code>.command</code> is defined for path with the
 <code>diff=</code><em>&lt;name&gt;</em> attribute, it is executed as an external diff driver
 (see above), and adding <code>diff.</code><em>&lt;name&gt;</em><code>.algorithm</code> has no effect, as the
 algorithm is not passed to the external diff driver.
 </td>
 </tr>
 </table>
 </div>
 </div>
 <div class="sect3">
 <h4 id="_defining_a_custom_hunk_header">Defining a custom hunk-header</h4>
 <div class="paragraph">
 <p>Each group of changes (called a "hunk") in the textual diff output
 is prefixed with a line of the form:</p>
 </div>
 <div class="literalblock">
 <div class="content">
 <pre>@@ -k,l +n,m @@ TEXT</pre>
 </div>
 </div>
 <div class="paragraph">
 <p>This is called a <em>hunk header</em>.  The "TEXT" portion is by default a line
 that begins with an alphabet, an underscore or a dollar sign; this
 matches what GNU <em>diff -p</em> output uses.  This default selection however
 is not suited for some contents, and you can use a customized pattern
 to make a selection.</p>
 </div>
 <div class="paragraph">
 <p>First, in .gitattributes, you would assign the <code>diff</code> attribute
 for paths.</p>
 </div>
 <div class="listingblock">
 <div class="content">
 <pre>*.tex   diff=tex</pre>
 </div>
 </div>
 <div class="paragraph">
 <p>Then, you would define a "diff.tex.xfuncname" configuration to
 specify a regular expression that matches a line that you would
 want to appear as the hunk header "TEXT". Add a section to your
 <code>$GIT_DIR/config</code> file (or <code>$HOME/.gitconfig</code> file) like this:</p>
 </div>
 <div class="listingblock">
 <div class="content">
 <pre>[diff "tex"]
         xfuncname = "^(\\\\(sub)*section\\{.*)$"</pre>
 </div>
 </div>
 <div class="paragraph">
 <p>Note.  A single level of backslashes are eaten by the
 configuration file parser, so you would need to double the
 backslashes; the pattern above picks a line that begins with a
 backslash, and zero or more occurrences of <code>sub</code> followed by
 <code>section</code> followed by open brace, to the end of line.</p>
 </div>
 <div class="paragraph">
 <p>There are a few built-in patterns to make this easier, and <code>tex</code>
 is one of them, so you do not have to write the above in your
 configuration file (you still need to enable this with the
 attribute mechanism, via .<code>gitattributes</code>).  The following built in
 patterns are available:</p>
 </div>
 <div class="ulist">
 <ul>
 <li>
 <p><code>ada</code> suitable for source code in the Ada language.</p>
 </li>
 <li>
 <p><code>bash</code> suitable for source code in the Bourne-Again SHell language.
 Covers a superset of POSIX shell function definitions.</p>
 </li>
 <li>
 <p><code>bibtex</code> suitable for files with BibTeX coded references.</p>
 </li>
 <li>
 <p><code>cpp</code> suitable for source code in the C and C++ languages.</p>
 </li>
 <li>
 <p><code>csharp</code> suitable for source code in the C# language.</p>
 </li>
 <li>
 <p><code>css</code> suitable for cascading style sheets.</p>
 </li>
 <li>
 <p><code>dts</code> suitable for devicetree (DTS) files.</p>
 </li>
 <li>
 <p><code>elixir</code> suitable for source code in the Elixir language.</p>
 </li>
 <li>
 <p><code>fortran</code> suitable for source code in the Fortran language.</p>
 </li>
 <li>
 <p><code>fountain</code> suitable for Fountain documents.</p>
 </li>
 <li>
 <p><code>golang</code> suitable for source code in the Go language.</p>
 </li>
 <li>
 <p><code>html</code> suitable for HTML/XHTML documents.</p>
 </li>
 <li>
 <p><code>java</code> suitable for source code in the Java language.</p>
 </li>
 <li>
 <p><code>kotlin</code> suitable for source code in the Kotlin language.</p>
 </li>
 <li>
 <p><code>markdown</code> suitable for Markdown documents.</p>
 </li>
 <li>
 <p><code>matlab</code> suitable for source code in the MATLAB and Octave languages.</p>
 </li>
 <li>
 <p><code>objc</code> suitable for source code in the Objective-C language.</p>
 </li>
 <li>
 <p><code>pascal</code> suitable for source code in the Pascal/Delphi language.</p>
 </li>
 <li>
 <p><code>perl</code> suitable for source code in the Perl language.</p>
 </li>
 <li>
 <p><code>php</code> suitable for source code in the PHP language.</p>
 </li>
 <li>
 <p><code>python</code> suitable for source code in the Python language.</p>
 </li>
 <li>
 <p><code>ruby</code> suitable for source code in the Ruby language.</p>
 </li>
 <li>
 <p><code>rust</code> suitable for source code in the Rust language.</p>
 </li>
 <li>
 <p><code>scheme</code> suitable for source code in the Scheme language.</p>
 </li>
 <li>
 <p><code>tex</code> suitable for source code for LaTeX documents.</p>
 </li>
 </ul>
 </div>
 </div>
 <div class="sect3">
 <h4 id="_customizing_word_diff">Customizing word diff</h4>
 <div class="paragraph">
 <p>You can customize the rules that <code>git</code> <code>diff</code> <code>--word-diff</code> uses to
 split words in a line, by specifying an appropriate regular expression
 in the "diff.*.wordRegex" configuration variable.  For example, in TeX
 a backslash followed by a sequence of letters forms a command, but
 several such commands can be run together without intervening
 whitespace.  To separate them, use a regular expression in your
 <code>$GIT_DIR/config</code> file (or <code>$HOME/.gitconfig</code> file) like this:</p>
 </div>
 <div class="listingblock">
 <div class="content">
 <pre>[diff "tex"]
         wordRegex = "\\\\[a-zA-Z]+|[{}]|\\\\.|[^\\{}[:space:]]+"</pre>
 </div>
 </div>
 <div class="paragraph">
 <p>A built-in pattern is provided for all languages listed in the
 previous section.</p>
 </div>
 </div>
 <div class="sect3">
 <h4 id="_performing_text_diffs_of_binary_files">Performing text diffs of binary files</h4>
 <div class="paragraph">
 <p>Sometimes it is desirable to see the diff of a text-converted
 version of some binary files. For example, a word processor
 document can be converted to an ASCII text representation, and
 the diff of the text shown. Even though this conversion loses
 some information, the resulting diff is useful for human
 viewing (but cannot be applied directly).</p>
 </div>
 <div class="paragraph">
 <p>The <code>textconv</code> config option is used to define a program for
 performing such a conversion. The program should take a single
 argument, the name of a file to convert, and produce the
 resulting text on stdout.</p>
 </div>
 <div class="paragraph">
 <p>For example, to show the diff of the exif information of a
 file instead of the binary information (assuming you have the
 exif tool installed), add the following section to your
 <code>$GIT_DIR/config</code> file (or <code>$HOME/.gitconfig</code> file):</p>
 </div>
 <div class="listingblock">
 <div class="content">
 <pre>[diff "jpg"]
         textconv = exif</pre>
 </div>
 </div>
 <div class="admonitionblock note">
 <table>
 <tr>
 <td class="icon">
 <div class="title">Note</div>
 </td>
 <td class="content">
 The text conversion is generally a one-way conversion;
 in this example, we lose the actual image contents and focus
 just on the text data. This means that diffs generated by
 textconv are <em>not</em> suitable for applying. For this reason,
 only <code>git</code> <code>diff</code> and the <code>git</code> <code>log</code> family of commands (i.e.,
 log, whatchanged, show) will perform text conversion. <code>git</code>
 <code>format-patch</code> will never generate this output. If you want to
 send somebody a text-converted diff of a binary file (e.g.,
 because it quickly conveys the changes you have made), you
 should generate it separately and send it as a comment <em>in
 addition to</em> the usual binary diff that you might send.
 </td>
 </tr>
 </table>
 </div>
 <div class="paragraph">
 <p>Because text conversion can be slow, especially when doing a
 large number of them with <code>git</code> <code>log</code> <code>-p</code>, Git provides a mechanism
 to cache the output and use it in future diffs.  To enable
 caching, set the "cachetextconv" variable in your diff driver&#8217;s
 config. For example:</p>
 </div>
 <div class="listingblock">
 <div class="content">
 <pre>[diff "jpg"]
         textconv = exif
         cachetextconv = true</pre>
 </div>
 </div>
 <div class="paragraph">
 <p>This will cache the result of running "exif" on each blob
 indefinitely. If you change the textconv config variable for a
 diff driver, Git will automatically invalidate the cache entries
 and re-run the textconv filter. If you want to invalidate the
 cache manually (e.g., because your version of "exif" was updated
 and now produces better output), you can remove the cache
 manually with <code>git</code> <code>update-ref</code> <code>-d</code> <code>refs/notes/textconv/jpg</code> (where
 "jpg" is the name of the diff driver, as in the example above).</p>
 </div>
 </div>
 <div class="sect3">
 <h4 id="_choosing_textconv_versus_external_diff">Choosing textconv versus external diff</h4>
 <div class="paragraph">
 <p>If you want to show differences between binary or specially-formatted
 blobs in your repository, you can choose to use either an external diff
 command, or to use textconv to convert them to a diff-able text format.
 Which method you choose depends on your exact situation.</p>
 </div>
 <div class="paragraph">
 <p>The advantage of using an external diff command is flexibility. You are
 not bound to find line-oriented changes, nor is it necessary for the
 output to resemble unified diff. You are free to locate and report
 changes in the most appropriate way for your data format.</p>
 </div>
 <div class="paragraph">
 <p>A textconv, by comparison, is much more limiting. You provide a
 transformation of the data into a line-oriented text format, and Git
 uses its regular diff tools to generate the output. There are several
 advantages to choosing this method:</p>
 </div>
 <div class="olist arabic">
 <ol class="arabic">
 <li>
 <p>Ease of use. It is often much simpler to write a binary to text
 transformation than it is to perform your own diff. In many cases,
 existing programs can be used as textconv filters (e.g., exif,
 odt2txt).</p>
 </li>
 <li>
 <p>Git diff features. By performing only the transformation step
 yourself, you can still utilize many of Git&#8217;s diff features,
 including colorization, word-diff, and combined diffs for merges.</p>
 </li>
 <li>
 <p>Caching. Textconv caching can speed up repeated diffs, such as those
 you might trigger by running <code>git</code> <code>log</code> <code>-p</code>.</p>
 </li>
 </ol>
 </div>
 </div>
 <div class="sect3">
 <h4 id="_marking_files_as_binary">Marking files as binary</h4>
 <div class="paragraph">
 <p>Git usually guesses correctly whether a blob contains text or binary
 data by examining the beginning of the contents. However, sometimes you
 may want to override its decision, either because a blob contains binary
 data later in the file, or because the content, while technically
 composed of text characters, is opaque to a human reader. For example,
 many postscript files contain only ASCII characters, but produce noisy
 and meaningless diffs.</p>
 </div>
 <div class="paragraph">
 <p>The simplest way to mark a file as binary is to unset the diff
 attribute in the .<code>gitattributes</code> file:</p>
 </div>
 <div class="listingblock">
 <div class="content">
 <pre>*.ps -diff</pre>
 </div>
 </div>
 <div class="paragraph">
 <p>This will cause Git to generate <code>Binary</code> <code>files</code> <code>differ</code> (or a binary
 patch, if binary patches are enabled) instead of a regular diff.</p>
 </div>
 <div class="paragraph">
 <p>However, one may also want to specify other diff driver attributes. For
 example, you might want to use <code>textconv</code> to convert postscript files to
 an ASCII representation for human viewing, but otherwise treat them as
 binary files. You cannot specify both <code>-diff</code> and <code>diff=ps</code> attributes.
 The solution is to use the <code>diff.*.binary</code> config option:</p>
 </div>
 <div class="listingblock">
 <div class="content">
 <pre>[diff "ps"]
   textconv = ps2ascii
   binary = true</pre>
 </div>
 </div>
 </div>
 </div>
 <div class="sect2">
 <h3 id="_performing_a_three_way_merge">Performing a three-way merge</h3>
 <div class="sect3">
 <h4 id="_merge"><code>merge</code></h4>
 <div class="paragraph">
 <p>The attribute <code>merge</code> affects how three versions of a file are
 merged when a file-level merge is necessary during <code>git</code> <code>merge</code>,
 and other commands such as <code>git</code> <code>revert</code> and <code>git</code> <code>cherry-pick</code>.</p>
 </div>
 <div class="dlist">
 <dl>
 <dt class="hdlist1">Set</dt>
 <dd>
 <p>Built-in 3-way merge driver is used to merge the
 contents in a way similar to <em>merge</em> command of <code>RCS</code>
 suite.  This is suitable for ordinary text files.</p>
 </dd>
 <dt class="hdlist1">Unset</dt>
 <dd>
 <p>Take the version from the current branch as the
 tentative merge result, and declare that the merge has
 conflicts.  This is suitable for binary files that do
 not have a well-defined merge semantics.</p>
 </dd>
 <dt class="hdlist1">Unspecified</dt>
 <dd>
 <p>By default, this uses the same built-in 3-way merge
 driver as is the case when the <code>merge</code> attribute is set.
 However, the <code>merge.default</code> configuration variable can name
 different merge driver to be used with paths for which the
 <code>merge</code> attribute is unspecified.</p>
 </dd>
 <dt class="hdlist1">String</dt>
 <dd>
 <p>3-way merge is performed using the specified custom
 merge driver.  The built-in 3-way merge driver can be
 explicitly specified by asking for "text" driver; the
 built-in "take the current branch" driver can be
 requested with "binary".</p>
 </dd>
 </dl>
 </div>
 </div>
 <div class="sect3">
 <h4 id="_built_in_merge_drivers">Built-in merge drivers</h4>
 <div class="paragraph">
 <p>There are a few built-in low-level merge drivers defined that
 can be asked for via the <code>merge</code> attribute.</p>
 </div>
 <div class="dlist">
 <dl>
 <dt class="hdlist1">text</dt>
 <dd>
 <p>Usual 3-way file level merge for text files.  Conflicted
 regions are marked with conflict markers &lt;&lt;&lt;&lt;&lt;&lt;&lt;,
 <code>=======</code> and &gt;&gt;&gt;&gt;&gt;&gt;&gt;.  The version from your branch
 appears before the <code>=======</code> marker, and the version
 from the merged branch appears after the <code>=======</code>
 marker.</p>
 </dd>
 <dt class="hdlist1">binary</dt>
 <dd>
 <p>Keep the version from your branch in the work tree, but
 leave the path in the conflicted state for the user to
 sort out.</p>
 </dd>
 <dt class="hdlist1">union</dt>
 <dd>
 <p>Run 3-way file level merge for text files, but take
 lines from both versions, instead of leaving conflict
 markers.  This tends to leave the added lines in the
 resulting file in random order and the user should
 verify the result. Do not use this if you do not
 understand the implications.</p>
 </dd>
 </dl>
 </div>
 </div>
 <div class="sect3">
 <h4 id="_defining_a_custom_merge_driver">Defining a custom merge driver</h4>
 <div class="paragraph">
 <p>The definition of a merge driver is done in the .<code>git/config</code>
 file, not in the <code>gitattributes</code> file, so strictly speaking this
 manual page is a wrong place to talk about it.  However&#8230;&#8203;</p>
 </div>
 <div class="paragraph">
 <p>To define a custom merge driver <code>filfre</code>, add a section to your
 <code>$GIT_DIR/config</code> file (or <code>$HOME/.gitconfig</code> file) like this:</p>
 </div>
 <div class="listingblock">
 <div class="content">
 <pre>[merge "filfre"]
         name = feel-free merge driver
         driver = filfre %O %A %B %L %P
         recursive = binary</pre>
 </div>
 </div>
 <div class="paragraph">
 <p>The <code>merge.*.name</code> variable gives the driver a human-readable
 name.</p>
 </div>
 <div class="paragraph">
 <p>The <code>merge.*.driver</code> variable&#8217;s value is used to construct a
 command to run to common ancestor&#8217;s version (<code>%O</code>), current
 version (<code>%A</code>) and the other branches' version (<code>%B</code>).  These
 three tokens are replaced with the names of temporary files that
 hold the contents of these versions when the command line is
 built. Additionally, <code>%L</code> will be replaced with the conflict marker
 size (see below).</p>
 </div>
 <div class="paragraph">
 <p>The merge driver is expected to leave the result of the merge in
 the file named with <code>%A</code> by overwriting it, and exit with zero
 status if it managed to merge them cleanly, or non-zero if there
 were conflicts.  When the driver crashes (e.g. killed by SEGV),
 it is expected to exit with non-zero status that are higher than
 128, and in such a case, the merge results in a failure (which is
 different from producing a conflict).</p>
 </div>
 <div class="paragraph">
 <p>The <code>merge.*.recursive</code> variable specifies what other merge
 driver to use when the merge driver is called for an internal
 merge between common ancestors, when there are more than one.
 When left unspecified, the driver itself is used for both
 internal merge and the final merge.</p>
 </div>
 <div class="paragraph">
 <p>The merge driver can learn the pathname in which the merged result
 will be stored via placeholder <code>%P</code>. The conflict labels to be used
 for the common ancestor, local head and other head can be passed by
 using <code>%S</code>, <code>%X</code> and <code>%Y</code> respectively.</p>
 </div>
 </div>
 <div class="sect3">
 <h4 id="_conflict_marker_size"><code>conflict-marker-size</code></h4>
 <div class="paragraph">
 <p>This attribute controls the length of conflict markers left in
 the work tree file during a conflicted merge.  Only a positive
 integer has a meaningful effect.</p>
 </div>
 <div class="paragraph">
 <p>For example, this line in .<code>gitattributes</code> can be used to tell the merge
 machinery to leave much longer (instead of the usual 7-character-long)
 conflict markers when merging the file <code>Documentation/git-merge.adoc</code>
 results in a conflict.</p>
 </div>
 <div class="listingblock">
 <div class="content">
 <pre>Documentation/git-merge.adoc    conflict-marker-size=32</pre>
 </div>
 </div>
 </div>
 </div>
 <div class="sect2">
 <h3 id="_checking_whitespace_errors">Checking whitespace errors</h3>
 <div class="sect3">
 <h4 id="_whitespace"><code>whitespace</code></h4>
 <div class="paragraph">
 <p>The <code>core.whitespace</code> configuration variable allows you to define what
 <em>diff</em> and <em>apply</em> should consider whitespace errors for all paths in
 the project (See <a href="git-config.html">git-config(1)</a>).  This attribute gives you finer
 control per path.</p>
 </div>
 <div class="dlist">
 <dl>
 <dt class="hdlist1">Set</dt>
 <dd>
 <p>Notice all types of potential whitespace errors known to Git.
 The tab width is taken from the value of the <code>core.whitespace</code>
 configuration variable.</p>
 </dd>
 <dt class="hdlist1">Unset</dt>
 <dd>
 <p>Do not notice anything as error.</p>
 </dd>
 <dt class="hdlist1">Unspecified</dt>
 <dd>
 <p>Use the value of the <code>core.whitespace</code> configuration variable to
 decide what to notice as error.</p>
 </dd>
 <dt class="hdlist1">String</dt>
 <dd>
 <p>Specify a comma separated list of common whitespace problems to
 notice in the same format as the <code>core.whitespace</code> configuration
 variable.</p>
 </dd>
 </dl>
 </div>
 </div>
 </div>
 <div class="sect2">
 <h3 id="_creating_an_archive">Creating an archive</h3>
 <div class="sect3">
 <h4 id="_export_ignore"><code>export-ignore</code></h4>
 <div class="paragraph">
 <p>Files and directories with the attribute <code>export-ignore</code> won&#8217;t be added to
 archive files.</p>
 </div>
 </div>
 <div class="sect3">
 <h4 id="_export_subst"><code>export-subst</code></h4>
 <div class="paragraph">
 <p>If the attribute <code>export-subst</code> is set for a file then Git will expand
 several placeholders when adding this file to an archive.  The
 expansion depends on the availability of a commit ID, i.e., if
 <a href="git-archive.html">git-archive(1)</a> has been given a tree instead of a commit or a
 tag then no replacement will be done.  The placeholders are the same
 as those for the option <code>--pretty=format:</code> of <a href="git-log.html">git-log(1)</a>,
 except that they need to be wrapped like this: <code>$Format:PLACEHOLDERS$</code>
 in the file.  E.g. the string <code>$Format:%H$</code> will be replaced by the
 commit hash.  However, only one <code>%</code>(<code>describe</code>) placeholder is expanded
 per archive to avoid denial-of-service attacks.</p>
 </div>
 </div>
 </div>
 <div class="sect2">
 <h3 id="_packing_objects">Packing objects</h3>
 <div class="sect3">
 <h4 id="_delta"><code>delta</code></h4>
 <div class="paragraph">
 <p>Delta compression will not be attempted for blobs for paths with the
 attribute <code>delta</code> set to false.</p>
 </div>
 </div>
 </div>
 <div class="sect2">
 <h3 id="_viewing_files_in_gui_tools">Viewing files in GUI tools</h3>
 <div class="sect3">
 <h4 id="_encoding"><code>encoding</code></h4>
 <div class="paragraph">
 <p>The value of this attribute specifies the character encoding that should
 be used by GUI tools (e.g. <a href="gitk.html">gitk(1)</a> and <a href="git-gui.html">git-gui(1)</a>) to
 display the contents of the relevant file. Note that due to performance
 considerations <a href="gitk.html">gitk(1)</a> does not use this attribute unless you
 manually enable per-file encodings in its options.</p>
 </div>
 <div class="paragraph">
 <p>If this attribute is not set or has an invalid value, the value of the
 <code>gui.encoding</code> configuration variable is used instead
 (See <a href="git-config.html">git-config(1)</a>).</p>
 </div>
 </div>
 </div>
 </div>
 </div>
 <div class="sect1">
 <h2 id="_using_macro_attributes">USING MACRO ATTRIBUTES</h2>
 <div class="sectionbody">
 <div class="paragraph">
 <p>You do not want any end-of-line conversions applied to, nor textual diffs
 produced for, any binary file you track.  You would need to specify e.g.</p>
 </div>
 <div class="listingblock">
 <div class="content">
 <pre>*.jpg -text -diff</pre>
 </div>
 </div>
 <div class="paragraph">
 <p>but that may become cumbersome, when you have many attributes.  Using
 macro attributes, you can define an attribute that, when set, also
 sets or unsets a number of other attributes at the same time.  The
 system knows a built-in macro attribute, <code>binary</code>:</p>
 </div>
 <div class="listingblock">
 <div class="content">
 <pre>*.jpg binary</pre>
 </div>
 </div>
 <div class="paragraph">
 <p>Setting the "binary" attribute also unsets the "text" and "diff"
 attributes as above.  Note that macro attributes can only be "Set",
 though setting one might have the effect of setting or unsetting other
 attributes or even returning other attributes to the "Unspecified"
 state.</p>
 </div>
 </div>
 </div>
 <div class="sect1">
 <h2 id="_defining_macro_attributes">DEFINING MACRO ATTRIBUTES</h2>
 <div class="sectionbody">
 <div class="paragraph">
 <p>Custom macro attributes can be defined only in top-level gitattributes
 files (<code>$GIT_DIR/info/attributes</code>, the .<code>gitattributes</code> file at the
 top level of the working tree, or the global or system-wide
 gitattributes files), not in .<code>gitattributes</code> files in working tree
 subdirectories.  The built-in macro attribute "binary" is equivalent
 to:</p>
 </div>
 <div class="listingblock">
 <div class="content">
 <pre>[attr]binary -diff -merge -text</pre>
 </div>
 </div>
 </div>
 </div>
 <div class="sect1">
 <h2 id="_notes">NOTES</h2>
 <div class="sectionbody">
 <div class="paragraph">
 <p>Git does not follow symbolic links when accessing a .<code>gitattributes</code>
 file in the working tree. This keeps behavior consistent when the file
 is accessed from the index or a tree versus from the filesystem.</p>
 </div>
 </div>
 </div>
 <div class="sect1">
 <h2 id="_examples">EXAMPLES</h2>
 <div class="sectionbody">
 <div class="paragraph">
 <p>If you have these three <code>gitattributes</code> file:</p>
 </div>
 <div class="listingblock">
 <div class="content">
 <pre>(in $GIT_DIR/info/attributes)

 a*      foo !bar -baz

 (in .gitattributes)
 abc     foo bar baz

 (in t/.gitattributes)
 ab*     merge=filfre
 abc     -foo -bar
 *.c     frotz</pre>
 </div>
 </div>
 <div class="paragraph">
 <p>the attributes given to path <code>t/abc</code> are computed as follows:</p>
 </div>
 <div class="olist arabic">
 <ol class="arabic">
 <li>
 <p>By examining <code>t/.gitattributes</code> (which is in the same
 directory as the path in question), Git finds that the first
 line matches.  <code>merge</code> attribute is set.  It also finds that
 the second line matches, and attributes <code>foo</code> and <code>bar</code>
 are unset.</p>
 </li>
 <li>
 <p>Then it examines .<code>gitattributes</code> (which is in the parent
 directory), and finds that the first line matches, but
 <code>t/.gitattributes</code> file already decided how <code>merge</code>, <code>foo</code>
 and <code>bar</code> attributes should be given to this path, so it
 leaves <code>foo</code> and <code>bar</code> unset.  Attribute <code>baz</code> is set.</p>
 </li>
 <li>
 <p>Finally it examines <code>$GIT_DIR/info/attributes</code>.  This file
 is used to override the in-tree settings.  The first line is
 a match, and <code>foo</code> is set, <code>bar</code> is reverted to unspecified
 state, and <code>baz</code> is unset.</p>
 </li>
 </ol>
 </div>
 <div class="paragraph">
 <p>As the result, the attributes assignment to <code>t/abc</code> becomes:</p>
 </div>
 <div class="listingblock">
 <div class="content">
 <pre>foo     set to true
 bar     unspecified
 baz     set to false
 merge   set to string value "filfre"
 frotz   unspecified</pre>
 </div>
 </div>
 </div>
 </div>
 <div class="sect1">
 <h2 id="_see_also">SEE ALSO</h2>
 <div class="sectionbody">
 <div class="paragraph">
 <p><a href="git-check-attr.html">git-check-attr(1)</a>.</p>
 </div>
 </div>
 </div>
 <div class="sect1">
 <h2 id="_git">GIT</h2>
 <div class="sectionbody">
 <div class="paragraph">
 <p>Part of the <a href="git.html">git(1)</a> suite</p>
 </div>
 </div>
 </div>
 </div>
 <div id="footer">
 <div id="footer-text">
 Last updated 2025-06-20 18:10:42 -0700
 </div>
 </div>
 </body>
 </html>