[realpath] first implementation

[ianmclinden]

No description provided.

[jgarzik]

@ianmclinden Please update this to the latest main branch, to solve CI build failure.

[jgarzik]

It looks good as a first pass, and passes CI.

However, it is missing the -E and -e arguments specified by POSIX.

[ianmclinden]

Can implement. Do you have reference for -E ? Neither Open Group Base nor any of my mans have that flag

[jgarzik]

Can implement. Do you have reference for -E ? Neither Open Group Base nor any of my mans have that flag

I am happy to share the specification privately, but cannot share publicly.

[ianmclinden]

Implemented -e|--canonicalize_existing, and -E along with the common -q|--quiet.

Errors are left raw from clap for invalid paths - i.e. '' arguments return the raw clap error error: one of the values isn't valid for an argument