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cde/src/cmd
Martijn Dekker d1483150ab 'cd': properly ignore $CDPATH if initial component is '.' or '..'
@stephane-chazelas writes:
> Per POSIX[*], cd should skip the $CDPATH processing if the first
> component of the directory given to cd is . or ...
>
> Yet, with ksh93u+m 2021-01-03 at least, while that's OK with ..,
> it's not with . with or without the posix option:
>
> $ CDPATH=/ ./ksh -o posix -c 'cd -P ./etc && pwd'
> /etc
> /etc
>
> It seems to be a regression introduced with ksh93u+ as I can't
> reproduce it with ksh93u or any version prior to that. I can also
> reproduce in u+, v- and the ksh2020 from the Ubuntu 20.04
> package.

src/cmd/ksh93/bltins/cd_pwd.c: b_cd():
- Skip $CDPATH processing not only if the path is absolute, but
  also if the initial path component is '.' or '..' (in the latter
  case the $CDPATH processing was done but appeared to be a no-op).

src/cmd/ksh93/tests/builtins.sh:
- Add regression test.

[*] https://pubs.opengroup.org/onlinepubs/9699919799.2018edition/utilities/cd.html

Fixes: https://github.com/ksh93/ksh/issues/151
2021-01-05 05:04:24 +00:00
..
builtin Fix some errors in the documentation and other minor issues (#42) 2020-06-25 19:31:51 +02:00
INIT New semantic versioning scheme; disable vmalloc in release builds 2021-01-05 04:52:42 +00:00
ksh93 'cd': properly ignore $CDPATH if initial component is '.' or '..' 2021-01-05 05:04:24 +00:00
Makefile Version: 2012-08-01-master 2016-01-11 15:54:23 -05:00
Mamfile Version: 2012-08-01-master 2016-01-11 15:54:23 -05:00