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Re: bash parameter expansion "doesn't like" dots?



On Tue, Mar 05, 2024 at 11:24:11AM +0900, John Crawley wrote:
> ^ worked as a negator in dash character classes up to Bullseye though, so something has changed recently. That's what my web searching failed to find...

It looks like dash doesn't have up-to-date documentation on its changes.
There's a ChangeLog file in the upstream Git repository's top level
directory[1] (shipped as changelog.gz in the Debian package), but the most
recent entry in it is dated 2014-11-17.

We might *guess* that this change was made to make dash more strict
about POSIX minimalism (removing extensions), but without documentation
we can't do more than guess about motives.

[1] https://git.kernel.org/pub/scm/utils/dash/dash.git/tree/


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