[racket-dev] [racket] Parens/string quotes automatic behavior

From: Robby Findler (robby at eecs.northwestern.edu)
Date: Thu May 23 11:13:21 EDT 2013

On Thursday, May 23, 2013, Nadeem Abdul Hamid wrote:

> Hello Racket devs,
> I'm working on tweaking how typing a double quote is handled in strings
> when DrRacket's auto parens mode is on, per recent post on the users list.
> If any of you use the mode and can offer feedback on the following, it'd be
> appreciated: In addition to handling Laurent's initial feature request (see
> message at bottom), I'm setting it up so that if the following string is in
> the DrRacket window:
>   "abcdefghi"
> and you select the _def_ and press " (double quote), then it places
> double-quotes around the "def" with additional quotes to ensure that the
> other two portions of the string are still validly delimited, i.e.
>   "abc""def""ghi"
> One question is where to put the cursor following this operation? Should
> it be right inside the beginning of the lifted string, or in front of its
> double quotes, i.e.:
>   "abc""|def""ghi"
> or "abc"|"def""ghi"
> ?
Oh: another possibility: keep the selection where it is (or, perhaps
better, select the open quote, the def, and the close quote).

> Another question is whether to space off the "def" string that is created
> from the surrounding ones, i.e.
>   "abc" "def" "ghi"
> instead of "abc""def""ghi"?
> (As a side note: the Emacs paredit mode handles the situation of a double
> quotes typed inside a string by inserting an escaped \". It uses a separate
> key combination to handle splitting both strings and parenthesized
> expressions into two pieces.)
> Thanks,
> --- nadeem
> On May 22, 2013, at 7:07 AM, Laurent wrote:
> > Hi,
> >
> > The new behavior of automatic parenthesis matching is really nice, but
> there is one problem with string quotes.
> > For example, if the cursor is in the middle of a string and I type the
> string-quote symbol ", it places a quote which cuts the current string and
> leaves the right part in a bad syntax.
> >
> > Most of the time, when I type a quote inside a string, it's because I
> want to split the string in two parts.
> > To do that, I have to type string-quote, string-quote, delete (to remove
> the extra string-quote added by the paren-match behavior), and left to go
> back between the two strings, which is mildly annoying.
> >
> > Would it be possible (unless problematic) to have the default
> paren-match behavior for strings that splits the string instead of
> inserting a single string-quote, possibly unless the left symbol is a
> backslash?
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