gdb: additional settings for emacs in .dir-locals.el

Two additional settings for developers who use emacs:

  1. Set brace-list-open to 0 for C and C++ modes, this ensures we
  format things like:

  enum blah
  {
    ....
  };

  Instead of the default for the emacs GNU style:

  enum blah
    {
      ...
    };

  The former seems to be the GDB style.

  2. Set sentence-end-double-space to t.  This is actually the default
  value for this setting, but if anyone has customised this to nil in
  general, then forcing this back to t for GDB files will give a
  better behaviour for the paragraph filling.

gdb/ChangeLog:

	* .dir-locals.el: Set sentence-end-double-space for all modes, and
	set brace-list-open to 0 for C and C++ modes.

gdbserver/ChangeLog:

	* .dir-locals.el: Set sentence-end-double-space for all modes, and
	set brace-list-open to 0 for C and C++ modes.

gdbsupport/ChangeLog:

	* .dir-locals.el: Set sentence-end-double-space for all modes, and
	set brace-list-open to 0 for C and C++ modes.

gdb/.dir-locals.el

@@ -22,12 +22,14 @@
  (tcl-mode . ((tcl-indent-level . 4)
 	      (tcl-continued-indent-level . 4)
 	      (indent-tabs-mode . t)))
- (nil . ((bug-reference-url-format . "http://sourceware.org/bugzilla/show_bug.cgi?id=%s")))
+ (nil . ((bug-reference-url-format . "http://sourceware.org/bugzilla/show_bug.cgi?id=%s")
+	 (sentence-end-double-space . t)))
  (c-mode . ((c-file-style . "GNU")
 	    (mode . c++)
 	    (indent-tabs-mode . t)
 	    (tab-width . 8)
 	    (c-basic-offset . 2)
+	    (eval . (c-set-offset 'brace-list-open 0))
 	    (eval . (c-set-offset 'innamespace 0))
 	    ))
  (c++-mode . ((eval . (when (fboundp 'c-toggle-comment-style)
@@ -36,6 +38,7 @@
 	      (tab-width . 8)
 	      (c-file-style . "GNU")
 	      (c-basic-offset . 2)
+	      (eval . (c-set-offset 'brace-list-open 0))
 	      (eval . (c-set-offset 'innamespace 0))
 	      ))
 )

gdb/ChangeLog

@@ -1,3 +1,8 @@
+2021-05-17  Andrew Burgess  <andrew.burgess@embecosm.com>
+
+	* .dir-locals.el: Set sentence-end-double-space for all modes, and
+	set brace-list-open to 0 for C and C++ modes.
+
 2021-05-17  Tom Tromey  <tromey@adacore.com>
 
 	* dwarf2/loc.c (dwarf2_evaluate_loc_desc::get_frame_base): Throw

gdbserver/.dir-locals.el

@@ -22,12 +22,14 @@
  (tcl-mode . ((tcl-indent-level . 4)
 	      (tcl-continued-indent-level . 4)
 	      (indent-tabs-mode . t)))
- (nil . ((bug-reference-url-format . "http://sourceware.org/bugzilla/show_bug.cgi?id=%s")))
+ (nil . ((bug-reference-url-format . "http://sourceware.org/bugzilla/show_bug.cgi?id=%s")
+	 (sentence-end-double-space . t)))
  (c-mode . ((c-file-style . "GNU")
 	    (mode . c++)
 	    (indent-tabs-mode . t)
 	    (tab-width . 8)
 	    (c-basic-offset . 2)
+	    (eval . (c-set-offset 'brace-list-open 0))
 	    (eval . (c-set-offset 'innamespace 0))
 	    ))
  (c++-mode . ((eval . (when (fboundp 'c-toggle-comment-style)
@@ -36,6 +38,7 @@
 	      (tab-width . 8)
 	      (c-file-style . "GNU")
 	      (c-basic-offset . 2)
+	      (eval . (c-set-offset 'brace-list-open 0))
 	      (eval . (c-set-offset 'innamespace 0))
 	      ))
 )

gdbserver/ChangeLog

@@ -1,3 +1,8 @@
+2021-05-17  Andrew Burgess  <andrew.burgess@embecosm.com>
+
+	* .dir-locals.el: Set sentence-end-double-space for all modes, and
+	set brace-list-open to 0 for C and C++ modes.
+
 2021-05-08  Simon Marchi  <simon.marchi@polymtl.ca>
 
 	* linux-low.cc (linux_process_target::wait_for_event_filtered):

gdbsupport/.dir-locals.el

@@ -22,12 +22,14 @@
  (tcl-mode . ((tcl-indent-level . 4)
 	      (tcl-continued-indent-level . 4)
 	      (indent-tabs-mode . t)))
- (nil . ((bug-reference-url-format . "http://sourceware.org/bugzilla/show_bug.cgi?id=%s")))
+ (nil . ((bug-reference-url-format . "http://sourceware.org/bugzilla/show_bug.cgi?id=%s")
+	 (sentence-end-double-space . t)))
  (c-mode . ((c-file-style . "GNU")
 	    (mode . c++)
 	    (indent-tabs-mode . t)
 	    (tab-width . 8)
 	    (c-basic-offset . 2)
+	    (eval . (c-set-offset 'brace-list-open 0))
 	    (eval . (c-set-offset 'innamespace 0))
 	    ))
  (c++-mode . ((eval . (when (fboundp 'c-toggle-comment-style)
@@ -36,6 +38,7 @@
 	      (tab-width . 8)
 	      (c-file-style . "GNU")
 	      (c-basic-offset . 2)
+	      (eval . (c-set-offset 'brace-list-open 0))
 	      (eval . (c-set-offset 'innamespace 0))
 	      ))
 )

gdbsupport/ChangeLog

@@ -1,3 +1,8 @@
+2021-05-17  Andrew Burgess  <andrew.burgess@embecosm.com>
+
+	* .dir-locals.el: Set sentence-end-double-space for all modes, and
+	set brace-list-open to 0 for C and C++ modes.
+
 2021-05-08  Simon Marchi  <simon.marchi@polymtl.ca>
 
 	* Makefile.in: Re-generate.