[PATCH v2 3/3] Documentation changes for the new zero-hexadecimal format

[Luis Machado <lgustavo@codesourcery.com>]

This patch updates the documentation to reflect the addition of the new
zero-hexadecimal format option for -var-set-format and also adds a NEWS entry
for the change.

I changed it from zhexadecimal to zero-hexadecimal so the IDE folks can
properly translate the string to something more reasonable.

gdb/ChangeLog:

2015-05-07  Luis Machado  <lgustavo@codesourcery.com>

	* NEWS: Add new note to MI changes.

gdb/doc/ChangeLog:

2015-05-07  Luis Machado  <lgustavo@codesourcery.com>

	* gdb.texinfo (GDB/MI Variable Objects): Update text for
	-var-set-format.
---
 gdb/NEWS            | 6 ++++++
 gdb/doc/gdb.texinfo | 7 ++++++-
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/gdb/NEWS b/gdb/NEWS
index 0c7084a..69a8f19 100644
--- a/gdb/NEWS
+++ b/gdb/NEWS
@@ -145,6 +145,12 @@ qXfer:exec-file:read
 HP/PA running HP-UX           hppa*-*-hpux*
 Itanium running HP-UX         ia64-*-hpux*
 
+* MI changes
+
+  ** The -var-set-format command now accepts the zero-hexadecimal
+     format.  It outputs data in hexadecimal format with zero-padding on the
+     left.
+
 *** Changes in GDB 7.9
 
 * GDB now supports hardware watchpoints on x86 GNU Hurd.
diff --git a/gdb/doc/gdb.texinfo b/gdb/doc/gdb.texinfo
index 19d8bb3..ef0be3c 100644
--- a/gdb/doc/gdb.texinfo
+++ b/gdb/doc/gdb.texinfo
@@ -28927,13 +28927,18 @@ The syntax for the @var{format-spec} is as follows:
 
 @smallexample
  @var{format-spec} @expansion{}
- @{binary | decimal | hexadecimal | octal | natural@}
+ @{binary | decimal | hexadecimal | octal | natural | zero-hexadecimal@}
 @end smallexample
 
 The natural format is the default format choosen automatically
 based on the variable type (like decimal for an @code{int}, hex
 for pointers, etc.).
 
+The zero-hexadecimal format has a representation similar to hexadecimal
+but with padding zeroes to the left of the value.  For example, a 32-bit
+hexadecimal value of 0x1234 would be represented as 0x00001234 in the
+zero-hexadecimal format.
+ 
 For a variable with children, the format is set only on the 
 variable itself, and the children are not affected.  
 
-- 
1.9.1