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[RFC/RFA] enable break

I happened to notice that if you say "help disable", you get a list
of sub-commands that includes "disable breakpoints", but if you say
"help enable", the list of sub-commands, does NOT include "enable
breakpoints".  It also doesn't tab-complete on "enable br<tab>".

On investigation, I discovered that the "enable breakpoints" command
is instantiated using "add_abbrev_prefix_cmd".  What the heck -- it's
not an abbreviation.  This dates back to before the current cvs repo.

Changing that call to "add_prefix_cmd" fixes the issues, and causes
no regressions when tested on amd64-linux.

OK to commit?

2010-06-18  Michael Snyder  <>

	* breakpoint.c (_initialize_breakpoint): Use add_prefix_cmd, 
	not add_abbrev_prefix_cmd, for "enable breakpoints".

Index: breakpoint.c
RCS file: /cvs/src/src/gdb/breakpoint.c,v
retrieving revision 1.490
diff -u -p -r1.490 breakpoint.c
--- breakpoint.c	16 Jun 2010 18:30:30 -0000	1.490
+++ breakpoint.c	19 Jun 2010 01:03:40 -0000
@@ -11264,7 +11264,7 @@ With a subcommand you can enable tempora
   add_com_alias ("en", "enable", class_breakpoint, 1);
-  add_abbrev_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\
+  add_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\
 Enable some breakpoints.\n\
 Give breakpoint numbers (separated by spaces) as arguments.\n\
 This is used to cancel the effect of the \"disable\" command.\n\

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