mc 4.5.55 scrambles prompt
Pavel Roskin
proski at gnu.org
Mon Mar 18 23:01:52 UTC 2002
Hi, Stephan!
> when using xterm's dynamic control sequence feature like this
>
> export PS1=$PS1"\[\e]0;\w\a\]"
>
> which sets xterm's caption to the current working directory,
> mc 4.5.55 shows something like "user at host:~ > 0;~" if you're
> in your home. This looks broken, it shouldn't strip anything.
It is done on purpose in function strip_ctrl_codes(), file src/util.c.
Some of the sequences can create mess on the screen if they e.g. move the
cursor. I don't think that separating the sequences into "harmful" and
"benign" and filtering only the former is worth the trouble.
Actually, I think that the idea of loading the command prompt from the
subshell is broken. It leads to many little bugs of a different kind.
For example, if you run a command from mc that prints something and you
press Ctrl-O before it finishes, the prompt show the output of the
command. It looks very weird.
It's also very easy to make MC prompt out-of-sync with the shell prompt.
Just do Ctrl-O, "cd ..", Ctrl-O and look at the prompt and at the panel.
The panel shows the new directory, the prompt is unchanged.
I believe that this feature should be removed from MC at some point
because it cannot be fixed properly - it's broken by design. In the
meantime don't expect too much from prompt loading.
--
Regards,
Pavel Roskin
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