[mathiasrw]

Closes #718

Stacked on #749. Merge that first.

Change

How the files are found, in this order:

1. A: each path given that is a file is used as it is, so a name with glob characters, like a[1].md, my (1).md or [id].tsx, gives only that file. The other paths are globbed together, so a glob that starts with ! still takes files away from the other globs.
2. With --absolute-path each file is known by its full path from here on.
3. B: all --exclude-glob (-X) values are globbed together as one group. They are always globs, also when one is the name of a file, so ! can be used in them too.
4. B is taken away from A. The files are compared by their full path, so ./a.md and a.md are the same file.
5. Last, --exclude-re (-x) takes away every file with a path that matches. With --absolute-path that is the full path.
6. The files are sorted.

A file that is found in more than one way is only handled once.

Tests

• test/js/fix/718.test.js tests each name in the table of the issue, a file in a folder, and how a path to a file works together with globs, a ! glob, --exclude-glob (always a glob, escaped, one group with !) and --exclude-re (also on the full path with --absolute-path).
• test/cli/run.sh tests the same through the CLI.

Good to know

• A ! glob does not take away a file given by its path, as that file is not a glob. Today a.md '!a.md' gives no file. Now it gives a.md. Use -X or -x to leave it out.
• -X is globs only, never files, so -X 'a[1].md' also leaves out a1.md.
• If a file is named *.md, then '*.md' gives only that file and no longer all markdown files. This is in the issue.
• Two old bugs are fixed with the full path compare: a file given with a relative and an absolute path was handled two times, and -X 'docs/a*' did not leave out ./docs/a.md.
• The README explains this under Good to know, and the help of -x and -X is updated.