I've looked at a lot of bash tab completion questions and haven't yet found one that answers this one.
I'm on a linux system (GNU bash, version 4.2.46(2)-release (x86_64-redhat-linux-gnu)) and normally tab completion works just fine.
However, when I go to use tab completion for an environment variable or command-line option, it fails. For example,
ls /v<TAB> ->
export FOO=/v<TAB> ->
export FOO=/v (bell plays)
When I do this on my Mac (GNU bash, version 5.0.16(1)-release (x86_64-apple-darwin18.7.0)) tab completion of the environment variable value works fine.
On both machines,
Someone (I don't know where this came from) suggested that
shopt -u progcomp
might help, and it does fix the problem! However, I don't need to unset that option Mac-side and I'm worried it might cause other strange side effects.
Is that a normal thing to unset? Is there anything else I can do to figure this out?