Document --unified/-U option

diff --git a/gitk b/gitk
index b9219c2c70c64ab70b29ce3f0416037af080f0fe..39e452aba96ec0c15fcdefcfb10bff05d6631eb9 100755 (executable)
--- a/gitk
+++ b/gitk
@@ -7478,9 +7478,9 @@ set revtreeargs {}
 set cmdline_files {}
 set i 0
 foreach arg $argv {
-    switch -regexp -- $arg {
-       "^$" { }
-       "^-d" { set datemode 1 }
+    switch -- $arg {
+       "" { }
+       "-d" { set datemode 1 }
        "--" {
            set cmdline_files [lrange $argv [expr {$i + 1}] end]
            break