git-gui: Display message box when we cannot find git in $PATH

If we cannot find the git executable in the user's $PATH then
we cannot function correctly.  Because we need that to get the
version so we can load our library correctly we cannot rely on
the library function "error_popup" here, as this is all running
before the library path has been configured, so error_popup is
not available to us.

Signed-off-by: Shawn O. Pearce <redacted>

diff --git a/git-gui.sh b/git-gui.sh
index 28d7c21692fe74ebdfe39c31a4cd27745cdf855f..10710e26c69a987fe2a712c1c146442525fefc05 100755 (executable)
--- a/git-gui.sh
+++ b/git-gui.sh
@@ -498,7 +498,11 @@ proc rmsel_tag {text} {
 set _git  [_which git]
 if {$_git eq {}} {
        catch {wm withdraw .}
-       error_popup "Cannot find git in PATH."
+       tk_messageBox \
+               -icon error \
+               -type ok \
+               -title [mc "git-gui: fatal error"] \
+               -message [mc "Cannot find git in PATH."]
        exit 1
 }