bug#58992: 28.2; "lax space matching" no longer works

[Andreas Schwab]

On Nov 04 2022, Vincent Lefevre wrote:

> Wow! This is really confusing! [:space:] is defined by POSIX,

Emacs regexps are _not_ defined by POSIX.

>     A character alternative can also specify named character classes
>     (*note Char Classes::).  This is a POSIX feature.  [...]

Did you read the referenced node?

‘[:space:]’
     This matches any character that has whitespace syntax (*note Syntax
     Class Table::).

-- 
Andreas Schwab, schwab@linux-m68k.org
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