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Re: quote removal issues within character class
From: |
L A Walsh |
Subject: |
Re: quote removal issues within character class |
Date: |
Sat, 09 Nov 2019 06:46:05 -0800 |
User-agent: |
Thunderbird |
On 2019/11/09 04:49, Robert Elz wrote:
> There's also
>
> The special characters '.', '*', '[', and '\\'
> (<period>, <asterisk>, <left-square-bracket>, and <backslash>,
> respectively) shall lose their special meaning within a bracket
> expression.
>
----
Is this really what the standard says, because '\\' is not a character, but
2 characters. They could use "\\" but if a backslash is between single
quotes, it loses its special meaning. The only way to get a backslash
when using single quotes that I've found is to end the single-quote
then use the backslash. So if you wanted to insert single quotes in
a string that is single-quoted, you would have to do this:
'this is a single-quote(SQ) quoted string using a SQ ('\'') within
the single quote.'
Alternatively using double-quotes or another quoting
mechanism might be preferable.
I find it odd that the standard would try to use a backslash within
a SQ'd string as a literalizer.
Re: quote removal issues within character class, Chet Ramey, 2019/11/13