[PATCH] partial fix PR 14777: Add abbrev cmd 'fo' for 'forward-search'.

[Yao Qi <yao@codesourcery.com>]

Hi,
As reported in gdb/14777, when typing 'fo' in CLI, we will get,

  (gdb) fo
  Ambiguous command "fo": focus, forward-search.

which is inconsistent to the doc about command 'forward-search' that
"abbreviate the command name as fo".

We can fix this problem in two ways, either remove this line above
from the doc or define "fo" as the abbreviated command of
'forward-search'.  IMO, latter is better, so this is what this patch
does.

Regression tested on x86_64-linux.  Is it OK?

gdb/doc:
2012-11-07  Yao Qi  <yao@codesourcery.com>

	* gdb.texinfo (Search): Add kindex for 'fo'.
gdb:
2012-11-07  Yao Qi  <yao@codesourcery.com>

	PR gdb/14777.
	* source.c (_initialize_source): Call add_com_alias to abbreviate
	'forward-search' as 'fo'.
---
 gdb/doc/gdb.texinfo |    1 +
 gdb/source.c        |    1 +
 2 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/gdb/doc/gdb.texinfo b/gdb/doc/gdb.texinfo
index c2c7745..c7777e6 100644
--- a/gdb/doc/gdb.texinfo
+++ b/gdb/doc/gdb.texinfo
@@ -6955,6 +6955,7 @@ regular expression.
 @table @code
 @kindex search
 @kindex forward-search
+@kindex fo @r{(@code{forward-search})}
 @item forward-search @var{regexp}
 @itemx search @var{regexp}
 The command @samp{forward-search @var{regexp}} checks each line,
diff --git a/gdb/source.c b/gdb/source.c
index bd11c63..307fecc 100644
--- a/gdb/source.c
+++ b/gdb/source.c
@@ -1953,6 +1953,7 @@ The address is also stored as the value of \"$_\"."));
 Search for regular expression (see regex(3)) from last line listed.\n\
 The matching line number is also stored as the value of \"$_\"."));
   add_com_alias ("search", "forward-search", class_files, 0);
+  add_com_alias ("fo", "forward-search", class_files, 1);
 
   add_com ("reverse-search", class_files, reverse_search_command, _("\
 Search backward for regular expression (see regex(3)) from last line listed.\n\
-- 
1.7.7.6