--- texinfo-5.0/tp/Texinfo/Parser.pm.org	2019-11-20 15:53:10.625719249 +0900
+++ texinfo-5.0/tp/Texinfo/Parser.pm	2019-11-20 15:53:42.949119841 +0900
@@ -5299,12 +5299,12 @@
     }
   } elsif ($command eq 'clickstyle') {
     # REMACRO
-    if ($line =~ /^\s+@([[:alnum:]][[:alnum:]\-]*)({})?\s*/) {
+    if ($line =~ /^\s+@([[:alnum:]][[:alnum:]\-]*)(\{\})?\s*/) {
       $args = ['@'.$1];
       $self->{'clickstyle'} = $1
         unless(_ignore_global_commands($self));
       my $remaining = $line;
-      $remaining =~ s/^\s+@([[:alnum:]][[:alnum:]\-]*)({})?\s*//;
+      $remaining =~ s/^\s+@([[:alnum:]][[:alnum:]\-]*)(\{\})?\s*//;
       $self->line_warn(sprintf($self->__(
                            "remaining argument on \@%s line: %s"), 
                              $command, $remaining), $line_nr) if ($remaining);