Documentation: show-ref: document --exclude-existing
Use the comment in the code to document the --exclude-existing function to git-show-ref. Signed-off-by: Julian Phillips <julian@quantumfyre.co.uk> Signed-off-by: Junio C Hamano <junkio@cox.net>
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@ -10,6 +10,7 @@ SYNOPSIS
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[verse]
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'git-show-ref' [-q|--quiet] [--verify] [-h|--head] [-d|--dereference]
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[-s|--hash] [--abbrev] [--tags] [--heads] [--] <pattern>...
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'git-show-ref' --exclude-existing[=pattern]
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DESCRIPTION
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-----------
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@ -19,6 +20,9 @@ commit IDs. Results can be filtered using a pattern and tags can be
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dereferenced into object IDs. Additionally, it can be used to test whether a
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particular ref exists.
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The --exclude-existing form is a filter that does the inverse, it shows the
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refs from stdin that don't exist in the local repository.
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Use of this utility is encouraged in favor of directly accessing files under
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in the `.git` directory.
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@ -61,6 +65,18 @@ OPTIONS
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Do not print any results to stdout. When combined with '--verify' this
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can be used to silently check if a reference exists.
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--exclude-existing, --exclude-existing=pattern::
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Make git-show-ref act as a filter that reads refs from stdin of the
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form "^(?:<anything>\s)?<refname>(?:\^\{\})?$" and performs the
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following actions on each:
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(1) strip "^{}" at the end of line if any;
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(2) ignore if pattern is provided and does not head-match refname;
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(3) warn if refname is not a well-formed refname and skip;
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(4) ignore if refname is a ref that exists in the local repository;
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(5) otherwise output the line.
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<pattern>::
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Show references matching one or more patterns.
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