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bug#7498: 23.2; scheme-mode.el doesn't parse racket file correctly


From: Alan Third
Subject: bug#7498: 23.2; scheme-mode.el doesn't parse racket file correctly
Date: Fri, 12 Aug 2016 20:12:14 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/25.1 (darwin)

Alexander Haeckel <address@hidden> writes:

> I describe the problem from 'emacs -Q':
> scheme-mode.el isn't able to correctly parse the file:
> racket-5.0.2/collects/drracket/tool-lib.rkt
> When I open the file, go to position (79,0)
> and execute `forward-sexp' I get
> Scan error: "Unbalanced parentheses", 2852, 65105
>
> The expected behaviour is for the point to be moved at the end
> of the file behind the last closing parenthesis to position (1663,85).
> When I move the point at the end of the file behind the last closing
> parenthesis and do `backward-sexp' the point is moved to line
> the point is moved to position (152,19) instead to (79,0), where
> the next character is an opening curly brace.

There are lines of the form:

    @address@hidden is set to 250;}

that appear to break things, because scheme-mode sees that closing curly
bracket as a comment. This syntax looks like it’s Racket specific.

My elisp skills aren’t good enough to tell if this is fixable.
-- 
Alan Third





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