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Editing File: /usr/share/doc/git-1.8.3.1/contrib/git-jump/git-jump

#!/bin/sh

usage() {
	cat <<\EOF
usage: git jump <mode> [<args>]

Jump to interesting elements in an editor.
The <mode> parameter is one of:

diff: elements are diff hunks. Arguments are given to diff.

merge: elements are merge conflicts. Arguments are ignored.

grep: elements are grep hits. Arguments are given to grep.
EOF
}

open_editor() {
	editor=`git var GIT_EDITOR`
	eval "$editor -q \$1"
}

mode_diff() {
	git diff --no-prefix --relative "$@" |
	perl -ne '
	if (m{^\+\+\+ (.*)}) { $file = $1; next }
	defined($file) or next;
	if (m/^@@ .*\+(\d+)/) { $line = $1; next }
	defined($line) or next;
	if (/^ /) { $line++; next }
	if (/^[-+]\s*(.*)/) {
		print "$file:$line: $1\n";
		$line = undef;
	}
	'
}

mode_merge() {
	git ls-files -u |
	perl -pe 's/^.*?\t//' |
	sort -u |
	while IFS= read fn; do
		grep -Hn '^<<<<<<<' "$fn"
	done
}

# Grep -n generates nice quickfix-looking lines by itself,
# but let's clean up extra whitespace, so they look better if the
# editor shows them to us in the status bar.
mode_grep() {
	git grep -n "$@" |
	perl -pe '
	s/[ \t]+/ /g;
	s/^ *//;
	'
}

if test $# -lt 1; then
	usage >&2
	exit 1
fi
mode=$1; shift

trap 'rm -f "$tmp"' 0 1 2 3 15
tmp=`mktemp -t git-jump.XXXXXX` || exit 1
type "mode_$mode" >/dev/null 2>&1 || { usage >&2; exit 1; }
"mode_$mode" "$@" >"$tmp"
test -s "$tmp" || exit 0
open_editor "$tmp"

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