why can't hiding or showing the block in c++ mode

why can't hiding or showing the block in c++ mode

[zhihang wang]

[-- Attachment #1.1: Type: text/plain, Size: 554 bytes --]

when I start hs-minor-mode and use S-mouse-2 to folding the program, an
error occur.
wrong-type-argument stringp nil
the debug information is
Debugger entered--Lisp error: (wrong-type-argument stringp nil)
  looking-at(nil)
  hs-inside-comment-p()
  hs-already-hidden-p()
  hs-toggle-hiding()
  hs-mouse-toggle-hiding((S-mouse-2 (#<window 9 on clsAvsSequence.cpp> 171
(10 . 85) 48293437)))
* call-interactively(hs-mouse-toggle-hiding)

But I can't understand the debugger message.
Would anyone help me?


--
Best Regards
zhihang wang

[-- Attachment #1.2: Type: text/html, Size: 817 bytes --]

[-- Attachment #2: Type: text/plain, Size: 152 bytes --]

_______________________________________________
help-gnu-emacs mailing list
help-gnu-emacs@gnu.org
http://lists.gnu.org/mailman/listinfo/help-gnu-emacs

Re: why can't hiding or showing the block in c++ mode

[Thien-Thi Nguyen]

"zhihang wang" <zhihang.wang@gmail.com> writes:

> when I start hs-minor-mode and use S-mouse-2 to folding the program, an
> error occur.

> wrong-type-argument stringp nil
> the debug information is
> Debugger entered--Lisp error: (wrong-type-argument stringp nil)
>   looking-at(nil)
>   hs-inside-comment-p()
>   hs-already-hidden-p()
>   hs-toggle-hiding()
>   hs-mouse-toggle-hiding((S-mouse-2 (#<window 9 on clsAvsSequence.cpp> 
>     171 (10 . 85) 48293437)))
> * call-interactively(hs-mouse-toggle-hiding)
>  
> But I can't understand the debugger message.
> Would anyone help me?

hideshow sets and uses some buffer-local variables, that are specific to
the major mode of the buffer.  it looks like one of those variables
`hs-c-start-regexp' is not initialized properly.  it should be a string.

i am not able to debug this w/o more information.

please post a recipe for recreating this, starting with the command
"emacs -q --no-site-file".  please also include the version numbers of
the emacs and hideshow.el involved.

you may want to look at the hideshow.el Commentary, in case something
there can be helpful.

thi