> On Sep 23, 2015, at 8:53 AM, Marc Kaufmann <marc.kaufman...@gmail.com> wrote:
> #lang racket/base
>
> (require scribble/base
> scribble/core)
>
> (provide equation*)
>
> (define (mymath start end . strs)
> (make-element (make-style "relax" '(exact-chars)) `(,start ,@strs ,end)))
>
> (define (equation* . strs)
> (apply mymath "\\begin{equation*}" "\\end{equation*}" strs))
>
> ----
>
> I still do not understand why I have to type "\\" rather than "\". I get that
> something somewhere is escaping the backslash. I am uncomfortable with this,
> as it seems that "{" and "}" are not escaped, but since I do not know what is
> and what isn't, I may at some point in the future get a cryptic error message
> because I used a command or a character in the strings that gets unescaped.
To avoid dealing with escapes like that, you could use the raw-string package,
which lets you do this:
raco pkg install raw-string
#lang raw-string/raw-string racket/base #\$
(require scribble/base
scribble/core)
(provide equation*)
(define (mymath start end . strs)
(make-element (make-style "relax" '(exact-chars)) `(,start ,@strs ,end)))
(define (equation* . strs)
(apply mymath $[\begin{equation*}] $[\end{equation*}] strs))
Those don't have to be [] brackets, they could be (), {}, <>, "", '', ^^, or
any other pair of characters, as long as you don't try to put the ending
character in the string.
You could also use at-exp for that, but raw-string is simpler.
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