checkout: Don't crash when switching away from an invalid branch.

diff --git a/git-gui/git-gui.sh b/git-gui/git-gui.sh
index 14b2d9aacd1d28084f195365b434747df2ddc95d..86402d49f72c56d793f2f1958a9e3d3f8300f367 100755 (executable)
--- a/git-gui/git-gui.sh
+++ b/git-gui/git-gui.sh
@@ -52,7 +52,11 @@ catch {rename send {}} ; # What an evil concept...
 set oguilib {@@GITGUI_LIBDIR@@}
 set oguirel {@@GITGUI_RELATIVE@@}
 if {$oguirel eq {1}} {
-       set oguilib [file dirname [file dirname [file normalize $argv0]]]
+       set oguilib [file dirname [file normalize $argv0]]
+       if {[file tail $oguilib] eq {git-core}} {
+               set oguilib [file dirname $oguilib]
+       }
+       set oguilib [file dirname $oguilib]
        set oguilib [file join $oguilib share git-gui lib]
        set oguimsg [file join $oguilib msgs]
 } elseif {[string match @@* $oguirel]} {
@@ -1928,7 +1932,7 @@ proc show_more_context {} {
 
 proc show_less_context {} {
        global repo_config
-       if {$repo_config(gui.diffcontext) >= 1} {
+       if {$repo_config(gui.diffcontext) > 1} {
                incr repo_config(gui.diffcontext) -1
                reshow_diff
        }