Re: [PATCH] Don't replace '\' with '\\' in before_prompt_hook

[Yao Qi <yao@codesourcery.com>]

Yao Qi <yao@codesourcery.com> writes:

> In gdb/command/prompt.py:before_prompt_hook, the '\' in the new prompt
> is replaced with '\\', shown as below,
>
>>     def before_prompt_hook(self, current):
>>         if self.value is not '':
>>             newprompt = gdb.prompt.substitute_prompt(self.value)
>>             return newprompt.replace('\\', '\\\\')
>>         else:
>>             return None
>
> I don't see any explanations on this in comments nor email.  As doc
> said, "set extended-prompt \w" substitute the current working
> directory, but it prints something different from what pwd or
> os.getcwdu() prints on mingw32 host.
>
> (gdb) python print os.getcwdu()^M
> \\build2-lucid-cs\yqi\yqi\arm-none-eabi
>
> (gdb) pwd^M
> Working directory \\build2-lucid-cs\yqi\yqi\arm-none-eabi
>
> (gdb) set extended-prompt \w
> \\\\build2-lucid-cs\\yqi\\yqi\\arm-none-eabi
>
> This makes me think whether the substitution in before_prompt_hook is
> necessary or not.  This patch is to remove this substitution.
>
> Run gdb.python on x86_64-linux and arm-none-eabi on mingw32 host.  No
> regressions.  Is it OK?
>
> gdb:
>
> 2014-10-22  Yao Qi  <yao@codesourcery.com>
>
> 	* python/lib/gdb/command/prompt.py (before_prompt_hook): Don't
> 	replace '\\' with '\\\\'.:

The trailing : can be removed.  I appreciate people familiar with gdb
python can review this patch, so, here is a ping.

-- 
Yao (齐尧)