git-gui: Treat `git version` as `git --version`

We know that the version subcommand of git is special.  It does not
currently have an executable link installed into $gitexecdir and we
therefore would never match it with one of our file exists tests.
So we forward any invocations to it directly to the git wrapper, as
it is a builtin within that executable.

Signed-off-by: Shawn O. Pearce <spearce@spearce.org>

diff --git a/git-gui.sh b/git-gui.sh
index 9b342f0..a3ac5da 100755 (executable)
--- a/git-gui.sh
+++ b/git-gui.sh
@@ -294,6 +294,7 @@ proc _git_cmd {name} {
 
        if {[catch {set v $_git_cmd_path($name)}]} {
                switch -- $name {
+                 version   -
                --version   -
                --exec-path { return [list $::_git $name] }
                }