Added var comment_nonstartwordchars to allow specifying chars that don't

count as word breaks when they start a word.  This is to work around a
display bug in Microsoft Windows/Microsoft Internet Explorer in which a
sequence of words in the format ".foo .bar .baz" does not word-wrap.

Slash/DB/MySQL/MySQL.pm

@@ -4301,6 +4301,31 @@ sub getSlashConf {
 		};
 	}
 
+	if ($conf{comment_nonstartwordchars}) {
+		# Expand this into a complete regex.  We catch not only
+		# these chars in their raw form, but also all HTML entities
+		# (because Windows/MSIE refuses to break before any word
+		# that starts with either the chars, or their entities).
+		# Build the regex with qr// and match entities for
+		# optimal speed.
+		my $src = $conf{comment_nonstartwordchars};
+		my @chars = ( );
+		my @entities = ( );
+		for my $i (0..length($src)-1) {
+			my $c = substr($src, $i, 1);
+			push @chars, "\Q$c";
+			push @entities, ord($c);
+			push @entities, sprintf("x%x", ord($c));
+		}
+		my $dotchar =
+			'(?:'
+			       . '[' . join("", @chars) . ']'
+			       . '|&#(?:' . join("|", @entities) . ');'
+		       . ')';
+		my $regex =         '^(\s+' . "$dotchar+" . ')\S';
+		$conf{comment_nonstartwordchars_regex} = qr{$regex}i;
+	}
+
 	$conf{badreasons} = 4 unless defined $conf{badreasons};
 
 	# for fun ... or something

Slash/Utility/Data/Data.pm

@@ -736,7 +736,8 @@ sub processCustomTags {
 =head2 breakHtml(TEXT, MAX_WORD_LENGTH)
 
 Private function.  Break up long words in some text.  Will ignore the
-contents of HTML tags.  Called from C<stripByMode> functions.
+contents of HTML tags.  Called from C<stripByMode> functions.  Handles
+spaces before dot-words so as to best work around a Microsoft bug.
 
 =over 4
 
@@ -776,19 +777,51 @@ sub breakHtml {
 
 	$mwl = $mwl || $constants->{'breakhtml_wordlength'} || 50;
 	$l = length $text;
+	my $cnswcr = $constants->{comment_nonstartwordchars_regex};
 
-	for (my $i = 0; $i < $l; $new .= $c, ++$i) {
+	for (my $i = 0; $i < $l; ++$i) {
+		my $append_c = 1;
 		$c = substr($text, $i, 1);
-		if ($c eq '<')		{ $in_tag = 1 }
-		elsif ($c eq '>')	{
+		if ($c eq '<')			{ $in_tag = 1 }
+		  elsif ($c eq '>')		{
 			$in_tag = 0;
 			$this_tag =~ s{^/?(\S+).*}{\U$1};
 			$cwl = 0 if $is_break_tag{$this_tag};
 			$this_tag = '';
-		}
-		elsif ($in_tag)		{ $this_tag .= $c }
-		elsif ($c =~ /\s/)	{ $cwl = 0 }
-		elsif (++$cwl > $mwl)	{ $new .= ' '; $cwl = 1 }
+		} elsif ($in_tag)		{ $this_tag .= $c }
+		  elsif ($c =~ /\s/)		{
+			my $nsc;
+			if (($nsc) = substr($text, $i) =~ $cnswcr) {
+				# This space doesn't count as a wordbreak because of
+				# a Windows/MSIE bug. The regex puts everything up to
+				# and including the non-start-char(s) into $nsc.
+				my $nsclen = length($nsc);
+				if ($cwl+$nsclen >= $mwl) {
+					# If lots of nscs were given, break them up
+					# before appending.  Start with the first,
+					# then all $mwl-long sequences after that.
+					$nsc =~ s{(\S)}{$1 };
+					while ($nsc =~ m{\S{$mwl,}\S}o) {
+						$nsc =~ s{(\S{$mwl})(\S)}{$1 $2}o;
+					}
+					$new .= "$nsc "; # append the nsc(s)
+					$i += $nsclen	# we're skipping ahead
+						-1;	# account for ++$i coming up
+					$cwl = 0;	# starting new word
+					$append_c = 0;
+				} else {
+					$new .= $nsc;	# append the nsc(s)
+					$i += $nsclen	# we're skipping ahead
+						-1;	# account for ++$i coming up
+					$cwl += $nsclen; # still in a word
+					$append_c = 0;
+				}
+			} else {
+				# This space does count as a wordbreak.
+				$cwl = 0;
+			}
+		} elsif (++$cwl > $mwl)		{ $new .= ' '; $cwl = 1 }
+		$new .= $c if $append_c;
 	}
 
 	return $new;

sql/mysql/defaults.sql

@@ -370,6 +370,7 @@ INSERT INTO vars (name, value, description) VALUES ('comment_cache_newstyle','0'
 INSERT INTO vars (name, value, description) VALUES ('comment_cache_purge_max_frac','0.75','In purging the _comment_text cache, fraction of max_keys to target');
 INSERT INTO vars (name, value, description) VALUES ('comment_cache_purge_min_comm','50','Min number comments in a discussion for it to force a cache purge');
 INSERT INTO vars (name, value, description) VALUES ('comment_cache_purge_min_req','5','Min number times a discussion must be requested to force a cache purge');
+INSERT INTO vars (name, value, description) VALUES ('comment_nonstartwordchars','.,;:/','Chars which cannot start a word (will be forcibly separated from the rest of the word by a space) - this works around a Windows/MSIE "widening" bug - set blank for no action');
 INSERT INTO vars (name, value, description) VALUES ('comment_maxscore','5','Maximum score for a specific comment');
 INSERT INTO vars (name, value, description) VALUES ('comment_minscore','-1','Minimum score for a specific comment');
 INSERT INTO vars (name, value, description) VALUES ('commentsPerPoint','1000','For every X comments, valid users get a Moderator Point');

sql/mysql/upgrades

@@ -102,6 +102,17 @@ ALTER TABLE sessions add column last_sid varchar(16);
 
 # Start of T_2_3_0_15
 
-# add ECODE tag ... YMMV if you've edited approvedtags previously
-UPDATE vars SET value = "B|I|P|A|LI|OL|UL|EM|BR|TT|STRONG|BLOCKQUOTE|DIV|ECODE" WHERE name = "approvedtags";
+# add ECODE tag ...
+UPDATE vars SET value=CONCAT(value,'|ECODE') WHERE name='approvedtags';
+
+# Message threshold
 INSERT INTO vars (name, value, description) VALUES ('message_threshold','1','Default threshold for a comment to trigger a message');
+
+# End of R_2_3_0_15
+
+# Start of T_2_3_0_16
+
+# Browser bug workaround
+INSERT INTO vars (name, value, description) VALUES ('comment_nonstartwordchars','.,;:/','Chars which cannot start a word (will be forcibly separated from the rest of the word by a space) - this works around a Windows/MSIE "widening" bug - set blank for no action')
+;
+