Re: escaping characters

[Noah Lavine <noah.b.lavine@gmail.com>]

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This is related to what ttn said, but I am a bit confused by the request.
Normally when you read *in* something like LaTeX source, you convert \\ to
\, and similar things. Then when you write *out* LaTeX source, you might
convert \ to \\. This is useful if, for instance, you want Guile to
automatically generate some LaTeX and then write it in a form that TeX will
read. Kejia seems to be asking for the opposite.

I certainly agree that it would be useful to have a general function for
this (and the reverse).

Noah


On Thu, Nov 1, 2012 at 2:14 PM, Thien-Thi Nguyen <ttn@gnuvola.org> wrote:

>
> () Kejia柯嘉 <w.kejia@gmail.com>
> () Thu, 1 Nov 2012 10:24:52 -0400
>
>    for an example, when a program reads in a latex source, is there an
>    escape function that can rewrite all `\' to `\\', `"' to `\"', and so
>    on?
>
> This kind of escaping for backslash and double-quote (and other chars,
> depending on Guile flavor) is built-in for ‘(object->string STRING)’,
> but anything else (the "and so on" bit) you have to define for yourself,
> or find something already defined.
>
> For example, Guile-BAUX provides module ‘(guile-baux write-string)’
> which exports proc ‘write-string’ that handles twelve additional
> characters:
>
>
> http://www.gnuvola.org/software/guile-baux/guile-baux.html.gz#write_002dstring
>
> Another example is Guile-PG module ‘(database postgres-qcons)’, which
> has all manner of procs to DTRT for various "and so on" cases:
>
> http://www.nongnu.org/guile-pg/doc/qcons-quoting.html#qcons-quoting
>
> I think it would be nice for these procs (and perhaps your LaTeX
> oriented one, once defined) to be rebased onto a general one, hosted
> apart from any particular Guile version (perhaps Guile-Lib -- is that
> project still viable?).
>
> Or maybe i'm missing something already out there by now.  I remember
> fruitlessly searching a number of years back, but things may have
> changed since then.  Here's some related discussion:
>
> http://lists.gnu.org/archive/html/guile-user/2012-01/msg00114.html
>
> [cc trimmed]
>
> --
> Thien-Thi Nguyen ..................................... GPG key: 4C807502
> .                  NB: ttn at glug dot org is not me                   .
> .                 (and has not been since 2007 or so)                  .
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