[PATCH] git-gui: Use shell to launch textconv filter in "blame"

[Matthieu Moy <Matthieu.Moy@imag.fr>]

This allows one to use textconv commands with arguments.

Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
---
 git-gui/Makefile      |    1 +
 git-gui/git-gui.sh    |    6 ++++++
 git-gui/lib/blame.tcl |    4 +++-
 3 files changed, 10 insertions(+), 1 deletions(-)

diff --git a/git-gui/Makefile b/git-gui/Makefile
index 197b55e..e22ba5c 100644
--- a/git-gui/Makefile
+++ b/git-gui/Makefile
@@ -215,6 +215,7 @@ endif
 $(GITGUI_MAIN): git-gui.sh GIT-VERSION-FILE GIT-GUI-VARS
 	$(QUIET_GEN)rm -f $@ $@+ && \
 	sed -e '1s|#!.*/sh|#!$(SHELL_PATH_SQ)|' \
+		-e 's|@@SHELL_PATH@@|$(SHELL_PATH_SQ)|' \
 		-e '1,30s|^ argv0=$$0| argv0=$(GITGUI_SCRIPT)|' \
 		-e '1,30s|^ exec wish | exec '\''$(TCLTK_PATH_SED)'\'' |' \
 		-e 's/@@GITGUI_VERSION@@/$(GITGUI_VERSION)/g' \
diff --git a/git-gui/git-gui.sh b/git-gui/git-gui.sh
index bb10489..9049abf 100755
--- a/git-gui/git-gui.sh
+++ b/git-gui/git-gui.sh
@@ -128,6 +128,7 @@ set _githtmldir {}
 set _reponame {}
 set _iscygwin {}
 set _search_path {}
+set _shellpath {@@SHELL_PATH@@}
 
 set _trace [lsearch -exact $argv --trace]
 if {$_trace >= 0} {
@@ -137,6 +138,11 @@ if {$_trace >= 0} {
 	set _trace 0
 }
 
+proc shellpath {} {
+	global _shellpath
+	return $_shellpath
+}
+
 proc appname {} {
 	global _appname
 	return $_appname
diff --git a/git-gui/lib/blame.tcl b/git-gui/lib/blame.tcl
index 2137ec9..77656d3 100644
--- a/git-gui/lib/blame.tcl
+++ b/git-gui/lib/blame.tcl
@@ -460,7 +460,9 @@ method _load {jump} {
 	}
 	if {$commit eq {}} {
 		if {$do_textconv ne 0} {
-			set fd [open |[list $textconv $path] r]
+			# Run textconv with sh -c "..." to allow it to
+			# contain command + arguments.
+			set fd [open |[list [shellpath] -c "$textconv \"\$0\"" $path] r]
 		} else {
 			set fd [open $path r]
 		}
-- 
1.7.2.1.30.g18195