gnu/packages/patches/automake-regexp-syntax.patch

   1 From <https://lists.gnu.org/archive/html/automake-patches/2015-07/msg00000.html>.
   2 See also <http://bugs.gnu.org/22372>.
   3
   4 From 34163794a58b5bd91c5d6bd9adf5437571c7a479 Mon Sep 17 00:00:00 2001
   5 From: Pavel Raiskup <praiskup@redhat.com>
   6 Date: Tue, 7 Jul 2015 10:54:24 +0200
   7 Subject: [PATCH] bin/automake: escape '{' in regexp pattern
   8
   9 Based on perlre(1) documentation:
  10 .. in Perl v5.26, literal uses of a curly bracket will be required
  11 to be escaped, say by preceding them with a backslash ("\{" ) or
  12 enclosing them within square brackets ("[{]") ..
  13
  14 References:
  15 https://bugzilla.redhat.com/1239379
  16
  17 * bin/automake.in (substitute_ac_subst_variables): Escape the
  18 occurrence of '{' character.
  19 ---
  20  bin/automake.in | 2 +-
  21  1 file changed, 1 insertion(+), 1 deletion(-)
  22
  23 diff --git a/bin/automake.in b/bin/automake.in
  24 index 0c29184..c294ced 100644
  25 --- a/bin/automake.in
  26 +++ b/bin/automake.in
  27 @@ -3898,7 +3898,7 @@ sub substitute_ac_subst_variables_worker
  28  sub substitute_ac_subst_variables
  29  {
  30    my ($text) = @_;
  31 -  $text =~ s/\${([^ \t=:+{}]+)}/substitute_ac_subst_variables_worker ($1)/ge;
  32 +  $text =~ s/\$\{([^ \t=:+{}]+)}/substitute_ac_subst_variables_worker ($1)/ge;
  33    return $text;
  34  }