zshrc: improve sudo-command-line

diff --git a/etc/zsh/zshrc b/etc/zsh/zshrc
index 38571fd..718853f 100644 (file)
--- a/etc/zsh/zshrc
+++ b/etc/zsh/zshrc
@@ -1201,9 +1201,9 @@ zle -N grml-zsh-fg
 function sudo-command-line () {
     [[ -z $BUFFER ]] && zle up-history
     local cmd="sudo "
-    if [[ ${BUFFER:0:${#cmd}} == ${cmd} ]]; then
+    if [[ ${BUFFER} == ${cmd}* ]]; then
         CURSOR=$(( CURSOR-${#cmd} ))
-        BUFFER="${BUFFER:${#cmd}}"
+        BUFFER="${BUFFER#$cmd}"
     else
         BUFFER="${cmd}${BUFFER}"
         CURSOR=$(( CURSOR+${#cmd} ))