Add native globbing of files

[nschonni]

The example in the repo works on systems that have find, but not so much in a Windows world https://github.com/tcort/markdown-link-check#check-links-from-a-local-markdown-folder-recursive
Maybe use https://www.npmjs.com/package/glob to try and parse the file parameter as a file glob and iterate over it in the CLI.

[timmkrause]

Like the idea. Having the same „problem“ but found a way (guess there are more) to work around it.
I am using „cmder“ to have find available.

But yes, native support would be great and make the usage much easier for recursive executions.

[timmkrause]

This would also enable statistic counters across multiple files: Number of errors, error percentage etc.

[timmkrause]

Will start with this topic when #41 has been accepted. My next time slot is Friday afternoon, I hope the changes have been merged then.

[nschonni]

It may be worth looking at how https://github.com/igorshubovych/markdownlint-cli does it

[timmkrause]

Now working on it but I won't finish it today.

[timmkrause]

Sorry. Have been pretty busy the last 2 weeks and now I am 3 weeks on vacation. Will get back to this topic if nobody foreruns me.

Current state: https://github.com/timmkrause/markdown-link-check/tree/feature/globs

There are still a few issues (and a critical one regarding async) that needs to be fixed. I was also thinking about moving the logic into separate "analyzers" like the protocol handlers in link-check.

Feel free to finish this work, otherwise I will get back to it in the mid of July.