git-send-email.perl: Handle shell metacharacters in $EDITOR properly

This fixes the git-send-perl semantics for launching an editor when
$GIT_EDITOR (or friends) contains shell metacharacters to match
launch_editor() in builtin-tag.c. If we use the current approach
(sh -c '$0 $@' "$EDITOR" files ...), we see it fails when $EDITOR has
shell metacharacters:

$ sh -x -c '$0 $@' "$VISUAL" "foo"
+ "$FAKE_EDITOR" foo
"$FAKE_EDITOR": 1: "$FAKE_EDITOR": not found

Whereas builtin-tag.c will invoke sh -c "$EDITOR \"$@\"".

Thus, this patch changes git-send-email.perl to use the same method as the
C utilities, and additionally updates t/t9001-send-email.sh to test for
this bug.

Signed-off-by: Bryan Donlan <bdonlan@fushizen.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/git-send-email.perl b/git-send-email.perl
index 9e568bf9c012b610fd8db7e4444cb7ff8c6e0a0f..b50239636dab4a5f64f4c3d4f8321fc954b3f1a1 100755 (executable)
--- a/git-send-email.perl
+++ b/git-send-email.perl
@@ -512,7 +512,7 @@ sub expand_aliases {
        close(C);
 
        my $editor = $ENV{GIT_EDITOR} || Git::config(@repo, "core.editor") || $ENV{VISUAL} || $ENV{EDITOR} || "vi";
-       system('sh', '-c', '$0 $@', $editor, $compose_filename);
+       system('sh', '-c', $editor.' "$@"', $editor, $compose_filename);
 
        open(C2,">",$compose_filename . ".final")
                or die "Failed to open $compose_filename.final : " . $!;

diff --git a/t/t9001-send-email.sh b/t/t9001-send-email.sh
index c0973b4e6ee2c6a55d1573e2341607c4adfcbb10..030f66cb7c35a3d7808a998512603726937acd19 100755 (executable)
--- a/t/t9001-send-email.sh
+++ b/t/t9001-send-email.sh
@@ -139,15 +139,19 @@ test_expect_success 'Valid In-Reply-To when prompting' '
 
 test_expect_success 'setup fake editor' '
        (echo "#!/bin/sh" &&
-        echo "echo fake edit >>\$1"
+        echo "echo fake edit >>\"\$1\""
        ) >fake-editor &&
        chmod +x fake-editor
 '
 
+FAKE_EDITOR="$(pwd)/fake-editor"
+export FAKE_EDITOR
+GIT_EDITOR='"$FAKE_EDITOR"'
+export GIT_EDITOR
+
 test_expect_success '--compose works' '
        clean_fake_sendmail &&
        echo y | \
-               GIT_EDITOR=$(pwd)/fake-editor \
                GIT_SEND_EMAIL_NOTTY=1 \
                git send-email \
                --compose --subject foo \