852 lines
44 KiB
HTML
852 lines
44 KiB
HTML
<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<!--[if IE]><meta http-equiv="X-UA-Compatible" content="IE=edge"><![endif]-->
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<meta name="generator" content="Asciidoctor 1.5.8">
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<title>gitsubmodules(7)</title>
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<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">
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<style>
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/* Asciidoctor default stylesheet | MIT License | http://asciidoctor.org */
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/* Uncomment @import statement below to use as custom stylesheet */
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/*@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";*/
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article,aside,details,figcaption,figure,footer,header,hgroup,main,nav,section,summary{display:block}
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audio,canvas,video{display:inline-block}
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audio:not([controls]){display:none;height:0}
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script{display:none!important}
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html{font-family:sans-serif;-ms-text-size-adjust:100%;-webkit-text-size-adjust:100%}
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a{background:transparent}
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a:focus{outline:thin dotted}
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a:active,a:hover{outline:0}
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h1{font-size:2em;margin:.67em 0}
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abbr[title]{border-bottom:1px dotted}
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b,strong{font-weight:bold}
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dfn{font-style:italic}
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hr{-moz-box-sizing:content-box;box-sizing:content-box;height:0}
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mark{background:#ff0;color:#000}
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code,kbd,pre,samp{font-family:monospace;font-size:1em}
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pre{white-space:pre-wrap}
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q{quotes:"\201C" "\201D" "\2018" "\2019"}
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small{font-size:80%}
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sub,sup{font-size:75%;line-height:0;position:relative;vertical-align:baseline}
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sup{top:-.5em}
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sub{bottom:-.25em}
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img{border:0}
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svg:not(:root){overflow:hidden}
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figure{margin:0}
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fieldset{border:1px solid silver;margin:0 2px;padding:.35em .625em .75em}
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legend{border:0;padding:0}
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button,input,select,textarea{font-family:inherit;font-size:100%;margin:0}
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button,input{line-height:normal}
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button,select{text-transform:none}
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button,html input[type="button"],input[type="reset"],input[type="submit"]{-webkit-appearance:button;cursor:pointer}
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button[disabled],html input[disabled]{cursor:default}
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input[type="checkbox"],input[type="radio"]{box-sizing:border-box;padding:0}
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button::-moz-focus-inner,input::-moz-focus-inner{border:0;padding:0}
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textarea{overflow:auto;vertical-align:top}
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table{border-collapse:collapse;border-spacing:0}
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*,*::before,*::after{-moz-box-sizing:border-box;-webkit-box-sizing:border-box;box-sizing:border-box}
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html,body{font-size:100%}
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body{background:#fff;color:rgba(0,0,0,.8);padding:0;margin:0;font-family:"Noto Serif","DejaVu Serif",serif;font-weight:400;font-style:normal;line-height:1;position:relative;cursor:auto;tab-size:4;-moz-osx-font-smoothing:grayscale;-webkit-font-smoothing:antialiased}
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a:hover{cursor:pointer}
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img,object,embed{max-width:100%;height:auto}
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object,embed{height:100%}
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img{-ms-interpolation-mode:bicubic}
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.left{float:left!important}
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.right{float:right!important}
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.text-left{text-align:left!important}
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.text-right{text-align:right!important}
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.text-center{text-align:center!important}
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.text-justify{text-align:justify!important}
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.hide{display:none}
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img,object,svg{display:inline-block;vertical-align:middle}
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textarea{height:auto;min-height:50px}
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select{width:100%}
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.center{margin-left:auto;margin-right:auto}
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.stretch{width:100%}
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.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}
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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;direction:ltr}
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a{color:#2156a5;text-decoration:underline;line-height:inherit}
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a:hover,a:focus{color:#1d4b8f}
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a img{border:none}
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p{font-family:inherit;font-weight:400;font-size:1em;line-height:1.6;margin-bottom:1.25em;text-rendering:optimizeLegibility}
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p aside{font-size:.875em;line-height:1.35;font-style:italic}
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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}
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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}
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h1{font-size:2.125em}
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h2{font-size:1.6875em}
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h3,#toctitle,.sidebarblock>.content>.title{font-size:1.375em}
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h4,h5{font-size:1.125em}
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h6{font-size:1em}
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hr{border:solid #dddddf;border-width:1px 0 0;clear:both;margin:1.25em 0 1.1875em;height:0}
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em,i{font-style:italic;line-height:inherit}
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strong,b{font-weight:bold;line-height:inherit}
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small{font-size:60%;line-height:inherit}
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code{font-family:"Droid Sans Mono","DejaVu Sans Mono",monospace;font-weight:400;color:rgba(0,0,0,.9)}
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ul,ol,dl{font-size:1em;line-height:1.6;margin-bottom:1.25em;list-style-position:outside;font-family:inherit}
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ul,ol{margin-left:1.5em}
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ul li ul,ul li ol{margin-left:1.25em;margin-bottom:0;font-size:1em}
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ul.square li ul,ul.circle li ul,ul.disc li ul{list-style:inherit}
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ul.square{list-style-type:square}
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ul.circle{list-style-type:circle}
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ul.disc{list-style-type:disc}
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ol li ul,ol li ol{margin-left:1.25em;margin-bottom:0}
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dl dt{margin-bottom:.3125em;font-weight:bold}
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dl dd{margin-bottom:1.25em}
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abbr,acronym{text-transform:uppercase;font-size:90%;color:rgba(0,0,0,.8);border-bottom:1px dotted #ddd;cursor:help}
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abbr{text-transform:none}
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blockquote{margin:0 0 1.25em;padding:.5625em 1.25em 0 1.1875em;border-left:1px solid #ddd}
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blockquote cite{display:block;font-size:.9375em;color:rgba(0,0,0,.6)}
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blockquote cite::before{content:"\2014 \0020"}
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blockquote cite a,blockquote cite a:visited{color:rgba(0,0,0,.6)}
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blockquote,blockquote p{line-height:1.6;color:rgba(0,0,0,.85)}
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@media screen and (min-width:768px){h1,h2,h3,#toctitle,.sidebarblock>.content>.title,h4,h5,h6{line-height:1.2}
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h1{font-size:2.75em}
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h2{font-size:2.3125em}
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h3,#toctitle,.sidebarblock>.content>.title{font-size:1.6875em}
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h4{font-size:1.4375em}}
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table{background:#fff;margin-bottom:1.25em;border:solid 1px #dedede}
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table thead,table tfoot{background:#f7f8f7}
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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}
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table tr th,table tr td{padding:.5625em .625em;font-size:inherit;color:rgba(0,0,0,.8)}
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table tr.even,table tr.alt,table tr:nth-of-type(even){background:#f8f8f7}
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table thead tr th,table tfoot tr th,table tbody tr td,table tr td,table tfoot tr td{display:table-cell;line-height:1.6}
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h1,h2,h3,#toctitle,.sidebarblock>.content>.title,h4,h5,h6{line-height:1.2;word-spacing:-.05em}
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h1 strong,h2 strong,h3 strong,#toctitle strong,.sidebarblock>.content>.title strong,h4 strong,h5 strong,h6 strong{font-weight:400}
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.clearfix::before,.clearfix::after,.float-group::before,.float-group::after{content:" ";display:table}
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.clearfix::after,.float-group::after{clear:both}
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*:not(pre)>code{font-size:.9375em;font-style:normal!important;letter-spacing:0;padding:.1em .5ex;word-spacing:-.15em;background-color:#f7f7f8;-webkit-border-radius:4px;border-radius:4px;line-height:1.45;text-rendering:optimizeSpeed;word-wrap:break-word}
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*:not(pre)>code.nobreak{word-wrap:normal}
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*:not(pre)>code.nowrap{white-space:nowrap}
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pre,pre>code{line-height:1.45;color:rgba(0,0,0,.9);font-family:"Droid Sans Mono","DejaVu Sans Mono",monospace;font-weight:400;text-rendering:optimizeSpeed}
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em em{font-style:normal}
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strong strong{font-weight:400}
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.keyseq{color:rgba(51,51,51,.8)}
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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-color:#f7f7f7;border:1px solid #ccc;-webkit-border-radius:3px;border-radius:3px;-webkit-box-shadow:0 1px 0 rgba(0,0,0,.2),0 0 0 .1em white inset;box-shadow:0 1px 0 rgba(0,0,0,.2),0 0 0 .1em #fff inset;margin:0 .15em;padding:.2em .5em;vertical-align:middle;position:relative;top:-.1em;white-space:nowrap}
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.keyseq kbd:first-child{margin-left:0}
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.keyseq kbd:last-child{margin-right:0}
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.menuseq,.menuref{color:#000}
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.menuseq b:not(.caret),.menuref{font-weight:inherit}
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.menuseq{word-spacing:-.02em}
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.menuseq b.caret{font-size:1.25em;line-height:.8}
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.menuseq i.caret{font-weight:bold;text-align:center;width:.45em}
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b.button::before,b.button::after{position:relative;top:-1px;font-weight:400}
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b.button::before{content:"[";padding:0 3px 0 2px}
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b.button::after{content:"]";padding:0 2px 0 3px}
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p a>code:hover{color:rgba(0,0,0,.9)}
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#header,#content,#footnotes,#footer{width:100%;margin-left:auto;margin-right:auto;margin-top:0;margin-bottom:0;max-width:62.5em;*zoom:1;position:relative;padding-left:.9375em;padding-right:.9375em}
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#header::before,#header::after,#content::before,#content::after,#footnotes::before,#footnotes::after,#footer::before,#footer::after{content:" ";display:table}
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#header::after,#content::after,#footnotes::after,#footer::after{clear:both}
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#content{margin-top:1.25em}
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#content::before{content:none}
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#header>h1:first-child{color:rgba(0,0,0,.85);margin-top:2.25rem;margin-bottom:0}
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#header>h1:first-child+#toc{margin-top:8px;border-top:1px solid #dddddf}
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#header>h1:only-child,body.toc2 #header>h1:nth-last-child(2){border-bottom:1px solid #dddddf;padding-bottom:8px}
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#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:-ms-flexbox;display:-webkit-flex;display:flex;-ms-flex-flow:row wrap;-webkit-flex-flow:row wrap;flex-flow:row wrap}
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#header .details span:first-child{margin-left:-.125em}
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#header .details span.email a{color:rgba(0,0,0,.85)}
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#header .details br{display:none}
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#header .details br+span::before{content:"\00a0\2013\00a0"}
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#header .details br+span.author::before{content:"\00a0\22c5\00a0";color:rgba(0,0,0,.85)}
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#header .details br+span#revremark::before{content:"\00a0|\00a0"}
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#header #revnumber{text-transform:capitalize}
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#header #revnumber::after{content:"\00a0"}
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#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}
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#toc{border-bottom:1px solid #e7e7e9;padding-bottom:.5em}
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#toc>ul{margin-left:.125em}
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#toc ul.sectlevel0>li>a{font-style:italic}
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#toc ul.sectlevel0 ul.sectlevel1{margin:.5em 0}
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#toc ul{font-family:"Open Sans","DejaVu Sans",sans-serif;list-style-type:none}
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#toc li{line-height:1.3334;margin-top:.3334em}
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#toc a{text-decoration:none}
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#toc a:active{text-decoration:underline}
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#toctitle{color:#7a2518;font-size:1.2em}
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@media screen and (min-width:768px){#toctitle{font-size:1.375em}
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body.toc2{padding-left:15em;padding-right:0}
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#toc.toc2{margin-top:0!important;background-color:#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}
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#toc.toc2 #toctitle{margin-top:0;margin-bottom:.8rem;font-size:1.2em}
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#toc.toc2>ul{font-size:.9em;margin-bottom:0}
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#toc.toc2 ul ul{margin-left:0;padding-left:1em}
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#toc.toc2 ul.sectlevel0 ul.sectlevel1{padding-left:0;margin-top:.5em;margin-bottom:.5em}
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body.toc2.toc-right{padding-left:0;padding-right:15em}
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body.toc2.toc-right #toc.toc2{border-right-width:0;border-left:1px solid #e7e7e9;left:auto;right:0}}
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@media screen and (min-width:1280px){body.toc2{padding-left:20em;padding-right:0}
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#toc.toc2{width:20em}
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#toc.toc2 #toctitle{font-size:1.375em}
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#toc.toc2>ul{font-size:.95em}
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#toc.toc2 ul ul{padding-left:1.25em}
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body.toc2.toc-right{padding-left:0;padding-right:20em}}
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#content #toc{border-style:solid;border-width:1px;border-color:#e0e0dc;margin-bottom:1.25em;padding:1.25em;background:#f8f8f7;-webkit-border-radius:4px;border-radius:4px}
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#content #toc>:first-child{margin-top:0}
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#content #toc>:last-child{margin-bottom:0}
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#footer{max-width:100%;background-color:rgba(0,0,0,.8);padding:1.25em}
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#footer-text{color:rgba(255,255,255,.8);line-height:1.44}
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#content{margin-bottom:.625em}
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.sect1{padding-bottom:.625em}
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@media screen and (min-width:768px){#content{margin-bottom:1.25em}
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.sect1{padding-bottom:1.25em}}
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.sect1:last-child{padding-bottom:0}
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.sect1+.sect1{border-top:1px solid #e7e7e9}
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#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}
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#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}
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#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}
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#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}
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#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}
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.audioblock,.imageblock,.literalblock,.listingblock,.stemblock,.videoblock{margin-bottom:1.25em}
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.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}
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table.tableblock.fit-content>caption.title{white-space:nowrap;width:0}
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.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)}
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table.tableblock #preamble>.sectionbody>[class="paragraph"]:first-of-type p{font-size:inherit}
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.admonitionblock>table{border-collapse:separate;border:0;background:none;width:100%}
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.admonitionblock>table td.icon{text-align:center;width:80px}
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.admonitionblock>table td.icon img{max-width:none}
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.admonitionblock>table td.icon .title{font-weight:bold;font-family:"Open Sans","DejaVu Sans",sans-serif;text-transform:uppercase}
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.admonitionblock>table td.content{padding-left:1.125em;padding-right:1.25em;border-left:1px solid #dddddf;color:rgba(0,0,0,.6)}
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.admonitionblock>table td.content>:last-child>:last-child{margin-bottom:0}
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.exampleblock>.content{border-style:solid;border-width:1px;border-color:#e6e6e6;margin-bottom:1.25em;padding:1.25em;background:#fff;-webkit-border-radius:4px;border-radius:4px}
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.exampleblock>.content>:first-child{margin-top:0}
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.exampleblock>.content>:last-child{margin-bottom:0}
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.sidebarblock{border-style:solid;border-width:1px;border-color:#e0e0dc;margin-bottom:1.25em;padding:1.25em;background:#f8f8f7;-webkit-border-radius:4px;border-radius:4px}
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.sidebarblock>:first-child{margin-top:0}
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.sidebarblock>:last-child{margin-bottom:0}
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.sidebarblock>.content>.title{color:#7a2518;margin-top:0;text-align:center}
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.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>: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}
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.literalblock pre,.listingblock pre:not(.highlight),.listingblock pre[class="highlight"],.listingblock pre[class^="highlight "],.listingblock pre.CodeRay,.listingblock pre.prettyprint{background:#f7f7f8}
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.sidebarblock .literalblock pre,.sidebarblock .listingblock pre:not(.highlight),.sidebarblock .listingblock pre[class="highlight"],.sidebarblock .listingblock pre[class^="highlight "],.sidebarblock .listingblock pre.CodeRay,.sidebarblock .listingblock pre.prettyprint{background:#f2f1f1}
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.literalblock pre,.literalblock pre[class],.listingblock pre,.listingblock pre[class]{-webkit-border-radius:4px;border-radius:4px;word-wrap:break-word;overflow-x:auto;padding:1em;font-size:.8125em}
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@media amzn-kf8{#header,#content,#footnotes,#footer{padding:0}}
|
|
</style>
|
|
</head>
|
|
<body class="manpage">
|
|
<div id="header">
|
|
<h1>gitsubmodules(7) Manual Page</h1>
|
|
<h2 id="_name">NAME</h2>
|
|
<div class="sectionbody">
|
|
<p>gitsubmodules - mounting one repository inside another</p>
|
|
</div>
|
|
</div>
|
|
<div id="content">
|
|
<div class="sect1">
|
|
<h2 id="_synopsis">SYNOPSIS</h2>
|
|
<div class="sectionbody">
|
|
<div class="literalblock">
|
|
<div class="content">
|
|
<pre>.gitmodules, $GIT_DIR/config</pre>
|
|
</div>
|
|
</div>
|
|
<div class="listingblock">
|
|
<div class="content">
|
|
<pre>git submodule
|
|
git <command> --recurse-submodules</pre>
|
|
</div>
|
|
</div>
|
|
</div>
|
|
</div>
|
|
<div class="sect1">
|
|
<h2 id="_description">DESCRIPTION</h2>
|
|
<div class="sectionbody">
|
|
<div class="paragraph">
|
|
<p>A submodule is a repository embedded inside another repository.
|
|
The submodule has its own history; the repository it is embedded
|
|
in is called a superproject.</p>
|
|
</div>
|
|
<div class="paragraph">
|
|
<p>On the filesystem, a submodule usually (but not always - see FORMS below)
|
|
consists of (i) a Git directory located under the <code>$GIT_DIR/modules/</code>
|
|
directory of its superproject, (ii) a working directory inside the
|
|
superproject’s working directory, and a <code>.git</code> file at the root of
|
|
the submodule’s working directory pointing to (i).</p>
|
|
</div>
|
|
<div class="paragraph">
|
|
<p>Assuming the submodule has a Git directory at <code>$GIT_DIR/modules/foo/</code>
|
|
and a working directory at <code>path/to/bar/</code>, the superproject tracks the
|
|
submodule via a <code>gitlink</code> entry in the tree at <code>path/to/bar</code> and an entry
|
|
in its <code>.gitmodules</code> file (see <a href="gitmodules.html">gitmodules</a>(5)) of the form
|
|
<code>submodule.foo.path = path/to/bar</code>.</p>
|
|
</div>
|
|
<div class="paragraph">
|
|
<p>The <code>gitlink</code> entry contains the object name of the commit that the
|
|
superproject expects the submodule’s working directory to be at.</p>
|
|
</div>
|
|
<div class="paragraph">
|
|
<p>The section <code>submodule.foo.*</code> in the <code>.gitmodules</code> file gives additional
|
|
hints to Git’s porcelain layer. For example, the <code>submodule.foo.url</code>
|
|
setting specifies where to obtain the submodule.</p>
|
|
</div>
|
|
<div class="paragraph">
|
|
<p>Submodules can be used for at least two different use cases:</p>
|
|
</div>
|
|
<div class="olist arabic">
|
|
<ol class="arabic">
|
|
<li>
|
|
<p>Using another project while maintaining independent history.
|
|
Submodules allow you to contain the working tree of another project
|
|
within your own working tree while keeping the history of both
|
|
projects separate. Also, since submodules are fixed to an arbitrary
|
|
version, the other project can be independently developed without
|
|
affecting the superproject, allowing the superproject project to
|
|
fix itself to new versions only when desired.</p>
|
|
</li>
|
|
<li>
|
|
<p>Splitting a (logically single) project into multiple
|
|
repositories and tying them back together. This can be used to
|
|
overcome current limitations of Git’s implementation to have
|
|
finer grained access:</p>
|
|
<div class="ulist">
|
|
<ul>
|
|
<li>
|
|
<p>Size of the Git repository:
|
|
In its current form Git scales up poorly for large repositories containing
|
|
content that is not compressed by delta computation between trees.
|
|
For example, you can use submodules to hold large binary assets
|
|
and these repositories can be shallowly cloned such that you do not
|
|
have a large history locally.</p>
|
|
</li>
|
|
<li>
|
|
<p>Transfer size:
|
|
In its current form Git requires the whole working tree present. It
|
|
does not allow partial trees to be transferred in fetch or clone.
|
|
If the project you work on consists of multiple repositories tied
|
|
together as submodules in a superproject, you can avoid fetching the
|
|
working trees of the repositories you are not interested in.</p>
|
|
</li>
|
|
<li>
|
|
<p>Access control:
|
|
By restricting user access to submodules, this can be used to implement
|
|
read/write policies for different users.</p>
|
|
</li>
|
|
</ul>
|
|
</div>
|
|
</li>
|
|
</ol>
|
|
</div>
|
|
</div>
|
|
</div>
|
|
<div class="sect1">
|
|
<h2 id="_the_configuration_of_submodules">The configuration of submodules</h2>
|
|
<div class="sectionbody">
|
|
<div class="paragraph">
|
|
<p>Submodule operations can be configured using the following mechanisms
|
|
(from highest to lowest precedence):</p>
|
|
</div>
|
|
<div class="ulist">
|
|
<ul>
|
|
<li>
|
|
<p>The command line for those commands that support taking submodules
|
|
as part of their pathspecs. Most commands have a boolean flag
|
|
<code>--recurse-submodules</code> which specify whether to recurse into submodules.
|
|
Examples are <code>grep</code> and <code>checkout</code>.
|
|
Some commands take enums, such as <code>fetch</code> and <code>push</code>, where you can
|
|
specify how submodules are affected.</p>
|
|
</li>
|
|
<li>
|
|
<p>The configuration inside the submodule. This includes <code>$GIT_DIR/config</code>
|
|
in the submodule, but also settings in the tree such as a <code>.gitattributes</code>
|
|
or <code>.gitignore</code> files that specify behavior of commands inside the
|
|
submodule.</p>
|
|
<div class="paragraph">
|
|
<p>For example an effect from the submodule’s <code>.gitignore</code> file
|
|
would be observed when you run <code>git status --ignore-submodules=none</code> in
|
|
the superproject. This collects information from the submodule’s working
|
|
directory by running <code>status</code> in the submodule while paying attention
|
|
to the <code>.gitignore</code> file of the submodule.</p>
|
|
</div>
|
|
<div class="paragraph">
|
|
<p>The submodule’s <code>$GIT_DIR/config</code> file would come into play when running
|
|
<code>git push --recurse-submodules=check</code> in the superproject, as this would
|
|
check if the submodule has any changes not published to any remote. The
|
|
remotes are configured in the submodule as usual in the <code>$GIT_DIR/config</code>
|
|
file.</p>
|
|
</div>
|
|
</li>
|
|
<li>
|
|
<p>The configuration file <code>$GIT_DIR/config</code> in the superproject.
|
|
Git only recurses into active submodules (see "ACTIVE SUBMODULES"
|
|
section below).</p>
|
|
<div class="paragraph">
|
|
<p>If the submodule is not yet initialized, then the configuration
|
|
inside the submodule does not exist yet, so where to
|
|
obtain the submodule from is configured here for example.</p>
|
|
</div>
|
|
</li>
|
|
<li>
|
|
<p>The <code>.gitmodules</code> file inside the superproject. A project usually
|
|
uses this file to suggest defaults for the upstream collection
|
|
of repositories for the mapping that is required between a
|
|
submodule’s name and its path.</p>
|
|
<div class="paragraph">
|
|
<p>This file mainly serves as the mapping between the name and path of submodules
|
|
in the superproject, such that the submodule’s Git directory can be
|
|
located.</p>
|
|
</div>
|
|
<div class="paragraph">
|
|
<p>If the submodule has never been initialized, this is the only place
|
|
where submodule configuration is found. It serves as the last fallback
|
|
to specify where to obtain the submodule from.</p>
|
|
</div>
|
|
</li>
|
|
</ul>
|
|
</div>
|
|
</div>
|
|
</div>
|
|
<div class="sect1">
|
|
<h2 id="_forms">FORMS</h2>
|
|
<div class="sectionbody">
|
|
<div class="paragraph">
|
|
<p>Submodules can take the following forms:</p>
|
|
</div>
|
|
<div class="ulist">
|
|
<ul>
|
|
<li>
|
|
<p>The basic form described in DESCRIPTION with a Git directory,
|
|
a working directory, a <code>gitlink</code>, and a <code>.gitmodules</code> entry.</p>
|
|
</li>
|
|
<li>
|
|
<p>"Old-form" submodule: A working directory with an embedded
|
|
<code>.git</code> directory, and the tracking <code>gitlink</code> and <code>.gitmodules</code> entry in
|
|
the superproject. This is typically found in repositories generated
|
|
using older versions of Git.</p>
|
|
<div class="paragraph">
|
|
<p>It is possible to construct these old form repositories manually.</p>
|
|
</div>
|
|
<div class="paragraph">
|
|
<p>When deinitialized or deleted (see below), the submodule’s Git
|
|
directory is automatically moved to <code>$GIT_DIR/modules/<name>/</code>
|
|
of the superproject.</p>
|
|
</div>
|
|
</li>
|
|
<li>
|
|
<p>Deinitialized submodule: A <code>gitlink</code>, and a <code>.gitmodules</code> entry,
|
|
but no submodule working directory. The submodule’s Git directory
|
|
may be there as after deinitializing the Git directory is kept around.
|
|
The directory which is supposed to be the working directory is empty instead.</p>
|
|
<div class="paragraph">
|
|
<p>A submodule can be deinitialized by running <code>git submodule deinit</code>.
|
|
Besides emptying the working directory, this command only modifies
|
|
the superproject’s <code>$GIT_DIR/config</code> file, so the superproject’s history
|
|
is not affected. This can be undone using <code>git submodule init</code>.</p>
|
|
</div>
|
|
</li>
|
|
<li>
|
|
<p>Deleted submodule: A submodule can be deleted by running
|
|
<code>git rm <submodule path> && git commit</code>. This can be undone
|
|
using <code>git revert</code>.</p>
|
|
<div class="paragraph">
|
|
<p>The deletion removes the superproject’s tracking data, which are
|
|
both the <code>gitlink</code> entry and the section in the <code>.gitmodules</code> file.
|
|
The submodule’s working directory is removed from the file
|
|
system, but the Git directory is kept around as it to make it
|
|
possible to checkout past commits without requiring fetching
|
|
from another repository.</p>
|
|
</div>
|
|
<div class="paragraph">
|
|
<p>To completely remove a submodule, manually delete
|
|
<code>$GIT_DIR/modules/<name>/</code>.</p>
|
|
</div>
|
|
</li>
|
|
</ul>
|
|
</div>
|
|
</div>
|
|
</div>
|
|
<div class="sect1">
|
|
<h2 id="_active_submodules">ACTIVE SUBMODULES</h2>
|
|
<div class="sectionbody">
|
|
<div class="paragraph">
|
|
<p>A submodule is considered active,</p>
|
|
</div>
|
|
<div class="olist loweralpha">
|
|
<ol class="loweralpha">
|
|
<li>
|
|
<p>if <code>submodule.<name>.active</code> is set to <code>true</code></p>
|
|
<div class="paragraph">
|
|
<p>or</p>
|
|
</div>
|
|
</li>
|
|
<li>
|
|
<p>if the submodule’s path matches the pathspec in <code>submodule.active</code></p>
|
|
<div class="paragraph">
|
|
<p>or</p>
|
|
</div>
|
|
</li>
|
|
<li>
|
|
<p>if <code>submodule.<name>.url</code> is set.</p>
|
|
</li>
|
|
</ol>
|
|
</div>
|
|
<div class="paragraph">
|
|
<p>and these are evaluated in this order.</p>
|
|
</div>
|
|
<div class="paragraph">
|
|
<p>For example:</p>
|
|
</div>
|
|
<div class="literalblock">
|
|
<div class="content">
|
|
<pre>[submodule "foo"]
|
|
active = false
|
|
url = https://example.org/foo
|
|
[submodule "bar"]
|
|
active = true
|
|
url = https://example.org/bar
|
|
[submodule "baz"]
|
|
url = https://example.org/baz</pre>
|
|
</div>
|
|
</div>
|
|
<div class="paragraph">
|
|
<p>In the above config only the submodule <em>bar</em> and <em>baz</em> are active,
|
|
<em>bar</em> due to (a) and <em>baz</em> due to (c). <em>foo</em> is inactive because
|
|
(a) takes precedence over (c)</p>
|
|
</div>
|
|
<div class="paragraph">
|
|
<p>Note that (c) is a historical artefact and will be ignored if the
|
|
(a) and (b) specify that the submodule is not active. In other words,
|
|
if we have a <code>submodule.<name>.active</code> set to <code>false</code> or if the
|
|
submodule’s path is excluded in the pathspec in <code>submodule.active</code>, the
|
|
url doesn’t matter whether it is present or not. This is illustrated in
|
|
the example that follows.</p>
|
|
</div>
|
|
<div class="literalblock">
|
|
<div class="content">
|
|
<pre>[submodule "foo"]
|
|
active = true
|
|
url = https://example.org/foo
|
|
[submodule "bar"]
|
|
url = https://example.org/bar
|
|
[submodule "baz"]
|
|
url = https://example.org/baz
|
|
[submodule "bob"]
|
|
ignore = true
|
|
[submodule]
|
|
active = b*
|
|
active = :(exclude) baz</pre>
|
|
</div>
|
|
</div>
|
|
<div class="paragraph">
|
|
<p>In here all submodules except <em>baz</em> (foo, bar, bob) are active.
|
|
<em>foo</em> due to its own active flag and all the others due to the
|
|
submodule active pathspec, which specifies that any submodule
|
|
starting with <em>b</em> except <em>baz</em> are also active, regardless of the
|
|
presence of the .url field.</p>
|
|
</div>
|
|
</div>
|
|
</div>
|
|
<div class="sect1">
|
|
<h2 id="_workflow_for_a_third_party_library">Workflow for a third party library</h2>
|
|
<div class="sectionbody">
|
|
<div class="literalblock">
|
|
<div class="content">
|
|
<pre># add a submodule
|
|
git submodule add <url> <path></pre>
|
|
</div>
|
|
</div>
|
|
<div class="literalblock">
|
|
<div class="content">
|
|
<pre># occasionally update the submodule to a new version:
|
|
git -C <path> checkout <new version>
|
|
git add <path>
|
|
git commit -m "update submodule to new version"</pre>
|
|
</div>
|
|
</div>
|
|
<div class="literalblock">
|
|
<div class="content">
|
|
<pre># See the list of submodules in a superproject
|
|
git submodule status</pre>
|
|
</div>
|
|
</div>
|
|
<div class="literalblock">
|
|
<div class="content">
|
|
<pre># See FORMS on removing submodules</pre>
|
|
</div>
|
|
</div>
|
|
</div>
|
|
</div>
|
|
<div class="sect1">
|
|
<h2 id="_workflow_for_an_artificially_split_repo">Workflow for an artificially split repo</h2>
|
|
<div class="sectionbody">
|
|
<div class="literalblock">
|
|
<div class="content">
|
|
<pre># Enable recursion for relevant commands, such that
|
|
# regular commands recurse into submodules by default
|
|
git config --global submodule.recurse true</pre>
|
|
</div>
|
|
</div>
|
|
<div class="literalblock">
|
|
<div class="content">
|
|
<pre># Unlike the other commands below clone still needs
|
|
# its own recurse flag:
|
|
git clone --recurse <URL> <directory>
|
|
cd <directory></pre>
|
|
</div>
|
|
</div>
|
|
<div class="literalblock">
|
|
<div class="content">
|
|
<pre># Get to know the code:
|
|
git grep foo
|
|
git ls-files</pre>
|
|
</div>
|
|
</div>
|
|
<div class="literalblock">
|
|
<div class="content">
|
|
<pre># Get new code
|
|
git fetch
|
|
git pull --rebase</pre>
|
|
</div>
|
|
</div>
|
|
<div class="literalblock">
|
|
<div class="content">
|
|
<pre># change worktree
|
|
git checkout
|
|
git reset</pre>
|
|
</div>
|
|
</div>
|
|
</div>
|
|
</div>
|
|
<div class="sect1">
|
|
<h2 id="_implementation_details">Implementation details</h2>
|
|
<div class="sectionbody">
|
|
<div class="paragraph">
|
|
<p>When cloning or pulling a repository containing submodules the submodules
|
|
will not be checked out by default; You can instruct <em>clone</em> to recurse
|
|
into submodules. The <em>init</em> and <em>update</em> subcommands of <em>git submodule</em>
|
|
will maintain submodules checked out and at an appropriate revision in
|
|
your working tree. Alternatively you can set <em>submodule.recurse</em> to have
|
|
<em>checkout</em> recursing into submodules.</p>
|
|
</div>
|
|
</div>
|
|
</div>
|
|
<div class="sect1">
|
|
<h2 id="_see_also">SEE ALSO</h2>
|
|
<div class="sectionbody">
|
|
<div class="paragraph">
|
|
<p><a href="git-submodule.html">git-submodule</a>(1), <a href="gitmodules.html">gitmodules</a>(5).</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</a>(1) suite</p>
|
|
</div>
|
|
</div>
|
|
</div>
|
|
</div>
|
|
<div id="footer">
|
|
<div id="footer-text">
|
|
Last updated 2019-02-26 19:31:11 UTC
|
|
</div>
|
|
</div>
|
|
</body>
|
|
</html> |