git-gui: allow specifying path '.' to the browser

Invoking "git-gui browser rev ." should show the file browser for the
commitish rev, starting at the current directory. When the current
directory is the working tree root, this errors out in normalize_relpath
because the '.' is removed, yielding an empty list as argument to [file
join ...]. git ls-tree (underlying the browser) accepts '.', so use that
as the value when in the root.

Signed-off-by: Mark Levedahl <mlevedahl@gmail.com>
Signed-off-by: Johannes Sixt <j6t@kdbg.org>

diff --git a/git-gui.sh b/git-gui.sh
index 57d48cc8387fb99ef1d67abd72262998de6d7e70..40a83487d64a147f7a38cac4014f5e1bccd42d35 100755 (executable)
--- a/git-gui.sh
+++ b/git-gui.sh
@@ -2992,7 +2992,11 @@ proc normalize_relpath {path} {
                }
                lappend elements $item
        }
-       return [eval file join $elements]
+       if {$elements ne {}} {
+               return [eval file join $elements]
+       } else {
+               return {.}
+       }
 }
 
 # -- Not a normal commit type invocation?  Do that instead!