Variable names ending with apostrophe (') are not highlighted correctly when variable name is also a keyword

[allansson]

Some code I am working in is using a function called module', but this severely messes up the syntax highlighting.

The reason is that all keywords in the grammar file is using \b to detect whole words. As I gather it, the \b will match any \w up until \W, where \w is a shorthand for [a-zA-Z0-9_] and \W is anything but \w. This is in conflict with Haskell's syntax, which actually allows any variable definition to end with '. I did a quick hack where I replaced the ending \b for the module-keyword with the following non-capturing group and it fixed the issue: (?:[^a-zA-Z0-9_'])

This problem is certainly affecting all keywords, and I was considering doing a pull request but my textmate grammar skills aren't that great so it is hard for me to know what the impact would be.

[JustusAdam]

This is a duplicate of #31

To avoid more people opening this issue as well I will publish version 2.2.2 right now which contains this fix and more.

[JustusAdam]

The new version should fix it for all keywords such as instance, module, class, let, where etc.
If you notice one that is still not correct please tell me, perhaps I forgot one.

[allansson]

@JustusAdam Thank you! I did a search, but only among open issues. Sorry for the trouble. I will try the new version and comment in #31 if I find any errors. Great work on this extension!

[JustusAdam]

I understand. You assumed that if it was a closed issue it would have been fixed in the extension as well. I was going to publish the change soon anyways. It just was an unfortunate timing.

Thanks. I think this must be the only really actively maintained Haskell highlighting grammar 😆 .