git issue import can fetch issues from origin with no arguments

[FrazerClews]

#81

[dspinellis]

This function and the ones' below can simply be echo | grep (No need for assignment and second echo). Even better, use expr match or sed, rather than grep whose use for this purpose isn't common.

[dspinellis]

To clarify:

get_provider()
{
  echo "$1" | grep -oP "(?<=@).*?(?=\.)"
}

or better

get_provider()
{
  expr match "$1" 'suitable RE here'
}

[FrazerClews]

Thanks. Using expr match gives the warning https://github.com/koalaman/shellcheck/wiki/SC2003 . Will sed or another command like cut do?

[dspinellis]

Good point. It seems that using : will not trigger the warning. Using sed is also fine.

[FrazerClews]

I made some changes using sed and even got it working with https URLs. Do you prefer the sed styling on line 905, or line 910 and 915? Had trouble with getting the provider sed working with the extended regex styling

[dspinellis]

Thanks for the heads-up. I made a couple of improvement suggestions.

[FrazerClews]

Think this PR is ready for review and potential merge if you're happy with it? I looked into incorporating the testing, but since the test suite import stage imports from a separate repo, the new functionality will just import issues from this issue tracker and not work.