Re: Regex with backslashes in a collection

> I'm using Vim 8 or 9 with 'magic' and re=0 (same using re=1).
>
> I want to find "\[" or "\]" in text like:
> abc\[def\]ghi\\xy\z
>

The problem may lie in the boundary of a character class, [ and ] and the
rules about its content.
Does the regex interpreter read [\[] as 2 characters, "\ or ]" or as one
"literal ]"; or "literal \"? How is the following "]" parsed?

There may be enough ambiguity in the definitions that tests will only be
valid in the particular interpreter.

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