[xmonad] Issue 461 in xmonad: if another wm is already running, please give a more descriptive error message

[codesite-noreply at google.com]

Status: New
Owner: ----
Labels: Type-Enhancement Usability

New issue 461 by nome... at gmail.com: if another wm is already running,  
please give a more descriptive error message
http://code.google.com/p/xmonad/issues/detail?id=461

This request was filed by a user via the Debian bugtracking system  
(http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=599211):

Steps to reproduce:
1) Start some other wm
2) Run xmonad

Expected results:
2) xmonad informs the user that a wm is already running and exits

Actual results:
2) xmonad prints

/home/lindi/.xmonad/xmonad-x86_64-linux: executeFile: does not exist (No  
such file or directory)
X Error of failed request:  BadAccess (attempt to access private resource  
denied)
   Major opcode of failed request:  2 (X_ChangeWindowAttributes)
   Serial number of failed request:  7
   Current serial number in output stream:  8

and leaves the user completely puzzled. Please consider printing
something like

"xmonad: Another window manager already running, exiting..."

instead or in addition to the above error message.