Jump helper messages

- 'jump' call marks when no argument is given
- some error messages
- j as alias for jump (very useful)

Signed-off-by: Gaetan Semet <gaetan@xeberon.net>

plugins/jump/jump.plugin.zsh

@@ -6,47 +6,78 @@
 # unmark FOO: delete a mark
 # marks: lists all marks
 #
+
 export MARKPATH=$HOME/.marks
 
-jump() {
+function jump()
-	cd -P "$MARKPATH/$1" 2>/dev/null || echo "No such mark: $1"
+{
+  if [[ -z $1 ]]; then
+    echo "Error: no mark name given"
+    echo "available marks:"
+    marks
+    return
+  fi
+  if [[ $1 == "--help" ]]; then
+    echo "Jump plugin:"
+    echo "  'jump FOO': jump to a mark named FOO"
+    echo "  'mark FOO': create a mark named FOO"
+    echo "  'unmark FOO': delete a mark"
+    echo "  'marks': lists all marks"
+    return
+  fi
+
+  cd -P "$MARKPATH/$1" 2>/dev/null || echo "No such mark: $1"
 }
 
-mark() {
+function mark()
-	if (( $# == 0 )); then
+{
-		MARK=$(basename "$(pwd)")
+  if (( $# == 0 )); then
-	else
+    MARK=$(basename "$(pwd)")
-		MARK="$1"
+  else
-	fi
+    MARK="$1"
-	if read -q \?"Mark $(pwd) as ${MARK}? (y/n) "; then
+  fi
-		mkdir -p "$MARKPATH"; ln -s "$(pwd)" "$MARKPATH/$MARK"
+  if read -q \?"Mark $(pwd) as ${MARK}? (y/n) "; then
-	fi
+    mkdir -p "$MARKPATH"; ln -s "$(pwd)" "$MARKPATH/$MARK"
+  fi
 }
 
-unmark() {
+function unmark()
-	rm -i "$MARKPATH/$1"
+{
+  rm -i "$MARKPATH/$1"
 }
 
 autoload colors
-marks() {
+function marks()
+{
+  if [[ -d $MARKPATH ]]; then
 	for link in $MARKPATH/*(@); do
 		local markname="$fg[cyan]${link:t}$reset_color"
 		local markpath="$fg[blue]$(readlink $link)$reset_color"
 		printf "%s\t" $markname
 		printf "-> %s \t\n" $markpath
 	done
+  else
+    echo "No mark found."
+  fi
 }
 
-_completemarks() {
+function _completemarks()
+{
 	reply=($(ls $MARKPATH/**/*(-) | grep : | sed -E 's/(.*)\/([_\da-zA-Z\-]*):$/\2/g'))
 }
+
 compctl -K _completemarks jump
 compctl -K _completemarks unmark
 
-_mark_expansion() {
+function _mark_expansion()
+{
 	setopt extendedglob
 	autoload -U modify-current-argument
 	modify-current-argument '$(readlink "$MARKPATH/$ARG")'
 }
+
 zle -N _mark_expansion
 bindkey "^g" _mark_expansion
+
+alias j='jump'
+compdef _jump j=jump