git-gui: use shell to launch textconv filter in "blame"

The textconv filters may include multiple arguments and may make use
of unix shell features. To maintain compatibility with 'git blame'
ensure these commands are passed through bash.

Reported-by: Kirill Smelkov <kirr@landau.phys.spbu.ru>
Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Pat Thoyts <patthoyts@users.sourceforge.net>

diff --git a/Makefile b/Makefile
index 197b55edf3eeeaec345d88227825cc550e6de72d..e22ba5c321dc47fdf512f30c5e6c741c41fb99eb 100644 (file)
--- a/Makefile
+++ b/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.sh b/git-gui.sh
index 815725d1e1fec3068e07320a682becd80d25fff9..8ade423eb46006025e56ee68e49230a8e8efb579 100755 (executable)
--- a/git-gui.sh
+++ b/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/lib/blame.tcl b/lib/blame.tcl
index 2137ec9684d0acdb386e6b50e1b41aa7705c9746..77656d3675c5c128eafe3667d5fcb95e38559b9f 100644 (file)
--- a/lib/blame.tcl
+++ b/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]
                }