Different gitignore pattern interpretations between node-ignore and Git

[tomokinakamaru]

I've noticed that the following five gitignore patterns are interpreted differently between node-ignore and Git:

pattern	path	node-ignore	Git
foo**/bar	foobar	Tracked 1	Ignored
bar/	foo/bar/	Tracked 2	Ignored
[!]	!	Ignored 3	Tracked
\\*	\\	Tracked 4	Ignored
\*	\	Ignored 5	Tracked

In my opinion, Git's interpretations are somewhat confusing, but given the wide use of node-ignore, I wanted to report these differences for clarification. I would be happy if the node-ignore follows Git perfectly, but I understand if it behaves differently against these edge cases.

Are these differences expected or known issues?

Footnotes

1. https://github.com/tomokinakamaru/node-ignore/blob/872e34fe0cf276571085a565e9bacfae0a30c19c/test/fixtures/cases.js#L34-L42 ↩

2. https://github.com/tomokinakamaru/node-ignore/blob/872e34fe0cf276571085a565e9bacfae0a30c19c/test/fixtures/cases.js#L43-L51 ↩

3. https://github.com/tomokinakamaru/node-ignore/blob/872e34fe0cf276571085a565e9bacfae0a30c19c/test/fixtures/cases.js#L52-L60 ↩

4. https://github.com/tomokinakamaru/node-ignore/blob/872e34fe0cf276571085a565e9bacfae0a30c19c/test/fixtures/cases.js#L61-L69 ↩

5. https://github.com/tomokinakamaru/node-ignore/blob/872e34fe0cf276571085a565e9bacfae0a30c19c/test/fixtures/cases.js#L70-L78 ↩