Red Hat Bugzilla – Bug 79221
mc has problems with the subshell when changing directories
Last modified: 2015-01-07 19:02:08 EST
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Description of problem:
mc-4.5.55-12 from RedHat 8.0 exhibits a problem with the subshell which didn't
occur with mc-4.5.51 from RedHat 7.3.
The problem is that at every change of directory, the subshell exists with some
error, after communicatting a lot with the parent mc for every path component of
the new or old (I can't tell) location. This results in a delay of ~1-2 seconds
on deeply nested directories - which is annoying, to say the least. The old mc
didn't produce any delay (on this scale).
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. start mc
2. go to, for example, /usr/share/doc/ImageMagick-5.4.7/www/Magick++, which is a
path with many entries
3. navigate up/down in the hierarchy, you will see the delay
4. do a strace -fF -s 250 -p <pid> on the mc process, the exit of the child is
visible, after a lot of strange communication with the parent process (mc itself).
Actual Results: Subshell exists, instead of changing the cwd to the new location.
Expected Results: Subshell should just change its cwd.
My system is RedHat 8.0 + updates, but with kernel from www.kernel.org + xfs,
and with devfs. A strace will be posted after this bug entry.
Created attachment 87824 [details]
strace output from 'strace -p <pid of mc> -fF -s 250
Try with mc 4.6.0 in rawhide (when it appears on the ftp site, if it hasn't)
I have a similar problem. It seems that the delay disappears when I run mc in non-utf8 environment (like LANG= mc). I also found out that bash-2.05a doesn't have this problem and the latest rawhide bash-2.05b-11 behaves somewhat differently (changing directories is a bit faster but 'LANG= mc' doesn't work anymore). btw, why is bash so slow when pasting big (half a page) portions of text? I think this has something to do with UTF.
I'm lost on whether/when/with-what-versions there is still a problem.
Is there a bug here in phoebe 2 or latest rawhide?
I don't think this problem exists any more. Never experienced it on
RHL 9 or FC 1. Closing.