GNU bug report logs - #21526
24.5; prolog-mode: broken indentation for if-then-else construct

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Message #35 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Markus Triska <triska <at> metalevel.at>
To: bug-gnu-emacs <at> gnu.org
Subject: Re: bug#21526: 24.5;
 prolog-mode: broken indentation for if-then-else construct
Date: Tue, 22 Sep 2015 23:04:14 +0200

Here are further test cases I found when trying this patch:

(1) After evaluating (show-paren-mode 1) and using the Prolog content:

   t1 :- a.
   t2 :- b.HERE

The dot in the immediately preceding line is highlighted as the
(mistakenly classified as such) "matching" element.

(2) Please enable syntax highlighting for DCGs with zero arguments.

For example, the following is colored as expected:

   test(X, Y) -->
           a,
           b.

In contrast, in the following DCG, "test" is unexpectedly not colored:

   test -->
           a,
           b.

(3) Please extend the patch to cover multiple conditions.

For example, when I press RET in the following partial construct:


   test :-
           (   a ->
               b
           ;   c ->HERE

I unexpectedly get:

   test :-
           (   a ->
               b
           ;   c ->
                       HERE

Whereas the expected result is:

   test :-
           (   a ->
               b
           ;   c ->
               HERE

Thank you and all the best,
Markus

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