fix use of $0

diff --git a/.zsh/func/vcsh b/.zsh/func/vcsh
index 0a08b5e31d3d541b8f0126678bb7eeeebcbb93a9..655c9ea3290ae06fdb02d25e453468f60a16fa10 100755 (executable)
--- a/.zsh/func/vcsh
+++ b/.zsh/func/vcsh
@@ -13,8 +13,8 @@
 local FGIT_BASE="$HOME/.fgits"
 
 if [ "${1:---help}" = '--help' ] || [ $# -gt 1 ]; then
-  echo "usage: ${0%/*} reponame" >&2
-  echo "usage: ${0%/*} -l" >&2
+  echo "usage: ${0##*/} reponame" >&2
+  echo "usage: ${0##*/} -l" >&2
   [ "$1" = '--help' ]
   return $?
 
@@ -38,4 +38,4 @@ unset _WORKTREE
 
 git status
 
-PS1="%S{VCSH:$1}%s$PS1" $SHELL -i
+PS1="%S{${0##*/}:$1}%s$PS1" $SHELL -i