Update emacs plugin. (#5201)

- Updated minimal version from 23 to 24.
- Added new aliases that fix unexpected close with -nw option.
- Removed some old aliases.
- Fixed line that detects open frames.

plugins/emacs/emacs.plugin.zsh

@@ -10,7 +10,7 @@
 # - Configuration changes made at runtime are applied to all frames.
 
 
-if "$ZSH/tools/require_tool.sh" emacs 23 2>/dev/null ; then
+if "$ZSH/tools/require_tool.sh" emacs 24 2>/dev/null ; then
     export EMACS_PLUGIN_LAUNCHER="$ZSH/plugins/emacs/emacsclient.sh"
 
     # set EDITOR if not already defined.
@@ -18,15 +18,14 @@ if "$ZSH/tools/require_tool.sh" emacs 23 2>/dev/null ; then
 
     alias emacs="$EMACS_PLUGIN_LAUNCHER --no-wait"
     alias e=emacs
+    # open terminal emacsclient
+    alias te="$EMACS_PLUGIN_LAUNCHER -nw"
 
     # same than M-x eval but from outside Emacs.
     alias eeval="$EMACS_PLUGIN_LAUNCHER --eval"
     # create a new X frame
     alias eframe='emacsclient --alternate-editor "" --create-frame'
 
-    # to code all night long
-    alias emasc=emacs
-    alias emcas=emacs
 
     # Write to standard output the path to the file
     # opened in the current buffer.

plugins/emacs/emacsclient.sh

@@ -2,15 +2,15 @@
 
 _emacsfun()
 {
-    # get list of available X windows.
-    x=`emacsclient --alternate-editor '' --eval '(x-display-list)' 2>/dev/null`
+    # get list of emacs frames.
+    frameslist=`emacsclient --alternate-editor '' --eval '(frame-list)' 2>/dev/null | egrep -o '(frame)+'`
 
-    if [ -z "$x" ] || [ "$x" = "nil" ] ;then
-        # Create one if there is no X window yet.
-        emacsclient --alternate-editor "" --create-frame "$@"
-    else
+    if [ "$(echo "$frameslist" | sed -n '$=')" -ge 2 ] ;then
         # prevent creating another X frame if there is at least one present.
         emacsclient --alternate-editor "" "$@"
+    else
+        # Create one if there is no X window yet.
+        emacsclient --alternate-editor "" --create-frame "$@"
     fi
 }