Bad regex and Invalid character class name

[pwfee]

It works well in nano 2.7.4 on my mac, but it warning me "bad regex" when I upgrade to nano 2.8.0 by brew.

I tried to fix out that problem and found that I can replaces the characters '<' and '>' by \b in all the nanorc file, and the error message gone. But it may not be a good solution.

http://jimmybonney.com/articles/configure_nano_syntax_highlighting_synology/

Error message:

Error in /Users/vinson/.nano/rpmspec.nanorc on line 3: Bad regex "[:<:]:": Invalid character class name

Error in /Users/vinson/.nano/rpmspec.nanorc on line 4: Bad regex "[:<:]:": Invalid character class name

[pwfee]

When I upgraded nano to 2.8.0_1 ,the problem fixed! It seems to the brew problem.

[scopatz]

Great!

[ai-danno]

Two things about this (for those who arrive here via Google search):

1. This problem still exists in nano 3.1 on OpenBSD 6.4

2. The fix is not to replace merely the '<' and '>' characters with '\b', but rather to include the surrounding ':' characters of them as well. AKA, replace ':<:' and ':>:' with '\b'.

That is the fix for my particular situation.

[scopatz]

PRs welcome