Re: how to (safely) escape an arbitrary string for use in PS1

[Chet Ramey]

On 5/21/21 7:23 PM, Koichi Murase wrote:

> > - interestingly: [\$\`\'\"\] (i.e. not double-\ at the end ... does
> >    seem to be parsed, but doesn't match \ ... shouldn't that be a syntax
> >    error?

Backslashes don't have any special meaning inside bracket expressions, so
the bracket expression is properly terminated.

> - Oh, this example is interesting. I guess [\$\`\'\"\] is treated as
> [<quoted $`'"]> and "escaped" as [$`'"], but it's just a naive guess.

It's a pretty good guess, but the backslash is part of the bracket
expression, too.

--
``The lyf so short, the craft so long to lerne.'' - Chaucer
                 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU    chet@case.edu    http://tiswww.cwru.edu/~chet/