I don't think that additional threads are going to help
There is an issue, and we should find a way to fix (IMHO).
Let me summarize again - and tell me if you feel differently.

Test cases:
[1] echo len(matchstr("\n",'\zs[^\n]\ze'))
[2] echo len(matchstr("\n","\\zs[^\n]\\ze"))

I expect both do the same, the difference is that the second as chr(10) in [^],
while the first has \n (which should be translated to chr(10).

However I obsorve that [2] returns 0 as expected , but [1] does return
1, thus it matches \n even though I told Vim that I do not want to match
it. People told me this was because '.' is equal to [^\n].


Current situation: at least to be fixed 
1:
  No matter whether '.' should behave like [^\n]
  [1] and [2] should behave the same, right?
2:
  This should be documented.
(Do you all at least agree these two statments?)

If so which is the best way to fix this - and which should be the way to
express [^\n] meaning do not match \n rather than behave like '.' then ?

Marc Weber

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