From fc2040a750fdfedf12aff2c382a49b086d06e59d Mon Sep 17 00:00:00 2001
From: Akim Demaille <akim.demaille@gmail.com>
Date: Sun, 8 Dec 2019 16:01:49 +0100
Subject: [PATCH] c++: fix comments for %code blocks

In a project of mine, vcsn, this commit fixes the following comments.

    --- /tmp/parse.hh	2019-12-08 15:51:24.792934703 +0100
    +++ lib/vcsn/rat/parse.hh	2019-12-08 16:00:59.137107503 +0100
    @@ -43,7 +43,7 @@

     #ifndef YY_YY_USERS_AKIM_SRC_LRDE_2_LIB_VCSN_RAT_PARSE_HH_INCLUDED
     # define YY_YY_USERS_AKIM_SRC_LRDE_2_LIB_VCSN_RAT_PARSE_HH_INCLUDED
    -// //                    "%code requires" blocks.
    +// "%code requires" blocks.
     #line 20 "/Users/akim/src/lrde/2/lib/vcsn/rat/parse.yy"

       #include <iostream>
    @@ -1851,7 +1851,7 @@

    -// //                    "%code provides" blocks.
    +// "%code provides" blocks.
     #line 60 "/Users/akim/src/lrde/2/lib/vcsn/rat/parse.yy"

       #define YY_DECL_(Class) \

* data/skeletons/bison.m4 (b4_percent_code_get): Pass an expanded
string to b4_comment.
---
 data/skeletons/bison.m4 | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/data/skeletons/bison.m4 b/data/skeletons/bison.m4
index 7cc4467b..7ca8497b 100644
--- a/data/skeletons/bison.m4
+++ b/data/skeletons/bison.m4
@@ -975,8 +975,8 @@ m4_define([b4_percent_code_get],
 [m4_pushdef([b4_macro_name], [[b4_percent_code(]$1[)]])dnl
 m4_ifval([$1], [m4_define([b4_percent_code_bison_qualifiers(]$1[)])])dnl
 m4_ifdef(b4_macro_name,
-[b4_comment([m4_if([$#], [0], [[Unqualified %code]],
-                   [["%code ]$1["]])[ blocks.]])
+[b4_comment(m4_if([$#], [0], [[[Unqualified %code blocks.]]],
+                  [[["%code ]$1[" blocks.]]]))
 b4_user_code([m4_indir(b4_macro_name)])])dnl
 m4_popdef([b4_macro_name])])