PATCH: prompt_clint and battery level with no battery

[Clint Adams <clint@xxxxxxx>]

On a system with /proc/apm that is not a laptop and thus has
no battery, my prompt has an unfortunate -1% in it.

I also think that the prompt system should behave more
harmoniously with user-defined precmd()s.

Index: Functions/Prompts/prompt_clint_setup
===================================================================
RCS file: /cvsroot/zsh/zsh/Functions/Prompts/prompt_clint_setup,v
retrieving revision 1.1
diff -u -r1.1 prompt_clint_setup
--- Functions/Prompts/prompt_clint_setup	2001/05/27 05:03:11	1.1
+++ Functions/Prompts/prompt_clint_setup	2001/06/26 13:36:45
@@ -67,7 +67,7 @@
   local bat
 
   bat=${${="$(</proc/apm)"}[7]/%/%%}
-  [[ $bat == "100%" ]] && psvar[2]=() || psvar[2]=$bat
+  [[ $bat == ("100%"|"-1%") ]] && psvar[3]=() || psvar[2]=$bat
 }
 
 prompt_clint_setup "$@"