[PATCH v2 1/2] git-jump: add an optional argument 'stdout'

["Yoichi Nakayama via GitGitGadget" <gitgitgadget@xxxxxxxxx>]

From: Yoichi Nakayama <yoichi.nakayama@xxxxxxxxx>

It can be used with M-x grep on Emacs.

Signed-off-by: Yoichi Nakayama <yoichi.nakayama@xxxxxxxxx>
---
 contrib/git-jump/README   |  9 ++++++++-
 contrib/git-jump/git-jump | 11 ++++++++++-
 2 files changed, 18 insertions(+), 2 deletions(-)

diff --git a/contrib/git-jump/README b/contrib/git-jump/README
index 8bcace29d21..6aaa6a928d2 100644
--- a/contrib/git-jump/README
+++ b/contrib/git-jump/README
@@ -79,6 +79,13 @@ git jump grep -i foo_bar
 git config jump.grepCmd "ag --column"
 --------------------------------------------------
 
+You can use the optional argument 'stdout' to print the listing to
+standard output. You can use it with M-x grep on Emacs.
+
+--------------------------------------------------
+# In Emacs, M-x grep and invoke "git jump stdout <mode>"
+Run grep (like this): git jump stdout diff
+--------------------------------------------------
 
 Related Programs
 ----------------
@@ -100,7 +107,7 @@ Limitations
 -----------
 
 This script was written and tested with vim. Given that the quickfix
-format is the same as what gcc produces, I expect emacs users have a
+format is the same as what gcc produces, I expect other tools have a
 similar feature for iterating through the list, but I know nothing about
 how to activate it.
 
diff --git a/contrib/git-jump/git-jump b/contrib/git-jump/git-jump
index 92dbd4cde18..a907f69304d 100755
--- a/contrib/git-jump/git-jump
+++ b/contrib/git-jump/git-jump
@@ -2,7 +2,7 @@
 
 usage() {
 	cat <<\EOF
-usage: git jump <mode> [<args>]
+usage: git jump [stdout] <mode> [<args>]
 
 Jump to interesting elements in an editor.
 The <mode> parameter is one of:
@@ -15,6 +15,9 @@ grep: elements are grep hits. Arguments are given to git grep or, if
       configured, to the command in `jump.grepCmd`.
 
 ws: elements are whitespace errors. Arguments are given to diff --check.
+
+If the optional argument `stdout` is given, print the quickfix
+lines to standard output.
 EOF
 }
 
@@ -69,6 +72,12 @@ if test $# -lt 1; then
 	exit 1
 fi
 mode=$1; shift
+if test "$mode" = "stdout"; then
+	mode=$1; shift
+	type "mode_$mode" >/dev/null 2>&1 || { usage >&2; exit 1; }
+	"mode_$mode" "$@" 2>/dev/null
+	exit 0
+fi
 
 trap 'rm -f "$tmp"' 0 1 2 3 15
 tmp=`mktemp -t git-jump.XXXXXX` || exit 1
-- 
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