Hi Sean,
> On 15/12/12 14:00, Ralph Corderoy wrote:
> > Those last two 's are starting and ending an empty single-quoted
> > string. ;-) That said, it works. These are all equivalent to it.
> >
> > s/\'//
> > "s/'//"
> > 's/'\''//'
>
> when I tried the first (and most obvious) one in your list and it
> bombed! Something to do with the fact that it as already single quoted
> and the need to break out of that, I gather.
Those three all work. You probably tried the first wrapped in single
quotes.
's/\'//'
You're right, it won't work. In single-quoted strings there is no
escape character, e.g. backslash, that's what's handy about them and
avoids `leaning toothpick syndrome' in things like regexps that heavily
use backslash.
So the failed attempt is a single-quoted string of three characters,
ess, slash, and backslash. Two unquoted slashes. And the final single
quote starts an unterminated single-quoted string.
Cheers, Ralph.
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