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[PATCHv2 1/2] submodule: preserve all arguments exactly when recursing

From
Kevin Ballard <kevin@sb.org>
Date
Nov 3, 2010, 05:05 UTC
Message-ID
<1288760740-10075-1-git-send-email-kevin@sb.org>
In-Reply-To
<5BE96A08-B8AB-4041-ABF2-7095EB5DD585@sb.org>

When performing a recursive status or update, any argments with whitespace would be split along that whitespace when passed to the recursive invocation of the update or status command.

This is caused by the special handling that sh provides to the $@ variable. Status and update stored "$@" into a separate variable, and passed that variable to the recursive invocation. Unfortunately, the special handling afforded to $@ isn't given to this new variable, and word-breaking occurs along whitespace boundaries.

We can use $(git rev-parse --sq-quote "$@") to produce a string containing a quoted version of all given args, suitable for passing to eval. We then recurse using something like `eval cmd_status "$orig_args"` instead of the former `cmd_status $orig_args`. This preserves all arguments exactly as given to the initial invocation of the command.

Helped-By: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Kevin Ballard <kevin@sb.org>
---
This patch ditches the quote_words function and uses
`git rev-parse --sq-quote "$@"` instead, as suggested by Jonathan Nieder.
 git-submodule.sh |    8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/git-submodule.sh b/git-submodule.sh
index 9ebbab7..543554b 100755
--- a/git-submodule.sh
+++ b/git-submodule.sh
@@ -374,7 +374,7 @@ cmd_init()
 cmd_update()
 {
 	# parse $args after "submodule ... update".
-	orig_args="$@"
+	orig_args="$(git rev-parse --sq-quote "$@")"
 	while test $# -ne 0
 	do
 		case "$1" in
@@ -500,7 +500,7 @@ cmd_update()
 
 		if test -n "$recursive"
 		then
-			(clear_local_git_env; cd "$path" && cmd_update $orig_args) ||
+			(clear_local_git_env; cd "$path" && eval cmd_update "$orig_args") ||
 			die "Failed to recurse into submodule path '$path'"
 		fi
 	done
@@ -733,7 +733,7 @@ cmd_summary() {
 cmd_status()
 {
 	# parse $args after "submodule ... status".
-	orig_args="$@"
+	orig_args="$(git rev-parse --sq-quote "$@")"
 	while test $# -ne 0
 	do
 		case "$1" in
@@ -790,7 +790,7 @@ cmd_status()
 				prefix="$displaypath/"
 				clear_local_git_env
 				cd "$path" &&
-				cmd_status $orig_args
+				eval cmd_status "$orig_args"
 			) ||
 			die "Failed to recurse into submodule path '$path'"
 		fi
-- 
1.7.3.2.200.g479de
Previous: Kevin BallardNext: Jonathan Nieder
Message 5 of 17 in “submodule: preserve all arguments exactly when recursing”
  1. 1/2 submodule: preserve all arguments exactly when recursingKevin Ballard, Nov 3, 2010
  2. 2/2 submodule: only preserve flags across recursive status/update invocationsKevin Ballard, Nov 3, 2010
  3. Jonathan NiederNov 3, 2010
  4. Kevin BallardNov 3, 2010
  5. 1/2 submodule: preserve all arguments exactly when recursingKevin Ballard, Nov 3, 2010
  6. Jonathan NiederNov 3, 2010
  7. Kevin BallardNov 3, 2010
  8. 2/2 submodule: only preserve flags across recursive status/update invocationsKevin Ballard, Nov 3, 2010
  9. Jonathan NiederNov 3, 2010
  10. Kevin BallardNov 3, 2010
  11. 1/2 submodule: preserve all arguments exactly when recursingKevin Ballard, Nov 3, 2010
  12. 2/2 submodule: only preserve flags across recursive status/update invocationsKevin Ballard, Nov 3, 2010
  13. Junio C HamanoNov 5, 2010
  14. Jonathan NiederNov 3, 2010
  15. Kevin BallardNov 3, 2010
  16. Jonathan NiederNov 3, 2010
  17. Kevin BallardNov 3, 2010

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