bug#9054: 24.0.50; show source in other window

[martin rudalics]

> It still needs to scan twice because for thing-at-point it should be
> implemented as two functions:
>
>    (put 'comment 'beginning-op 'thing-at-point--beginning-of-comment)
>    (put 'comment 'end-op 'thing-at-point--end-of-comment)

That should be redesigned in some way, possibly caching the syntax state
together with its 'buffer-modified-tick' when putting the 'beginning-op'.
And I would do the same for strings.  If I'm not completely mistaken,
you have to run the 'foward-sexp' from their beginnings there as well.

>> BTW, I've recently seen this
>>
>> Debugger entered--Lisp error: (args-out-of-range #<buffer *Help*> 1 2461677)
>>    parse-partial-sexp(1 2461677)
>>    syntax-ppss(2461677)
>>    context-menu-region((keymap #("Context Menu" 0 12 (hide t))
>>    context-menu-map()
>>    describe-buffer-bindings(#<buffer *info*> nil)
>>    describe-bindings()
>>    funcall-interactively(describe-bindings)
>>    call-interactively(describe-bindings nil nil)
>>    command-execute(describe-bindings)
>>
>> Any ideas as to what could have happened here?  I must have been hitting
>> C-h b by accident - as a rule I never call 'describe-bindings' - but
>> 2461677 looks slightly preposterous ...
>
> It seems you still using old source code?  Because recently this was fixed
> in event-end to use (window-point).

Maybe.  Just that I can't remember working with a buffer that large ...

martin