Re: [raman@users.sf.net: shell-mode: cursor Point loses on long prompts:]

[Chong Yidong <cyd@stupidchicken.com>]

Richard Stallman <rms@gnu.org> writes:

> It sounds like this is a bug in the field handling of line-move.
> Would someone please investigate, then respond with the diagnosis?

The trouble is that line-move-1 calls `beginning-of-line', then
(vertical-motion -1).  On field on a continued line, this doesn't move
far enough, and we return to the original position when trying to
return to the old column.  I installed a hack to work around this.

> Here is a test case, comprised  the lines pasted from the shell
> buffer, interspersed with comments:
>
> #cd to /tmp and make a bogus directory there:
> mkdir 'a     directory         with     a     very     long     file name '
> 18:27:21 labrador tmp $ cd a\ \ \ \ \ directory\ \ \ \ \ \ \ \ \ with\ \ \ \ \ a\ \ \ \ \ very\ \ \ \ \ long\ \ \ \ \ file\ name\ /
> 18:27:28 labrador a     directory         with     a     very long     file name  $ ls
> 18:27:39 labrador a     directory         with     a     very     long     file name  $ 
>
> #execute ls, after the next prompt is displayed, pressing c-p
>  leaves  point trapped after the prompt. Hitting C-c C-p moves
>  prompt correctly to the line where ls was executed.