bash tab completion for module use dir<TAB> doesn't work if _filedir isn't on system

[rtmclay]

If the bash completion function _filedir is not there then you can't do tab completion for module use under bash.

[rtmclay]

Lmod version 6.5.5 fixes this problem. At least in my tests.

[boegel]

@rtmclay I can confirm this is fixed in Lmod 6.5.5, where tab completion for paths works (e.g. module use /tm<tab> completes to module use /tmp/

What doesn't work is tab completion for environment variables though, which does work in other contexts... For example when $PREFIX is defined, module use $PRE<tab> doesn't complete to module use $PREFIX (it doesn't throw a nasty error either though, so that's definitely a step up).

I have no idea if this could be fixed as well, or how hard it would be. Maybe @pneerincx has an idea?

[pneerincx]

@boegel module use $PRE<tab> will autocomplete with #159 to module use $PREFIX, but only if that environment variable contains a valid/existing path to a directory. While I was at it I also added support for expanding ~ to home dirs.

[boegel]

@rtmclay this can be closed now? Thanks again @pneerincx!