Commit 1ce9f40a authored by Kim F. Storm's avatar Kim F. Storm

Mention pp and ff commands.

parent 6c5d0c52
......@@ -69,9 +69,11 @@ fatal error, you can use the GDB command `pr'. First print the value
in the ordinary way, with the `p' command. Then type `pr' with no
arguments. This calls a subroutine which uses the Lisp printer.
Note: It is not a good idea to try `pr' if you know that Emacs is in
deep trouble: its stack smashed (e.g., if it encountered SIGSEGV due
to stack overflow), or crucial data structures, such as `obarray',
You can also use `pp value' to print the emacs value directly.
Note: It is not a good idea to try `pr' or `pp' if you know that Emacs
is in deep trouble: its stack smashed (e.g., if it encountered SIGSEGV
due to stack overflow), or crucial data structures, such as `obarray',
corrupted, etc. In such cases, the Emacs subroutine called by `pr'
might make more damage, like overwrite some data that is important for
debugging the original problem.
......@@ -442,6 +444,9 @@ Several more functions for debugging display code are available in
Emacs compiled with GLYPH_DEBUG defined; type "C-h f dump- TAB" and
"C-h f trace- TAB" to see the full list.
When you debug display problems running emacs under X, you can use
the `ff' command to flush all pending display updates to the screen.
** Debugging LessTif
......
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