Allow more unicode-specific variances.

Author: coke

xt/word-variants.t

@@ -20,11 +20,13 @@ my %variants = %( filehandle => 'file [\s+|\-] handle',
                   lookahead  => 'look \- ahead',
                   lookbehind => 'look [\s+|\-] behind',
                   smartmatch => 'smart  [\s+|\-] match',
-                  zero-width => 'zero \s+ width<!before \' joiner\'>',
+                  zero-width => 'zero \s+ width<!before \' joiner\'><!before \' no-break space\'>',
                   NYI        => 'niy',
                   metaoperator => 'meta [\s+|\-] operator',
                   semicolon => 'semi [\s+|\-] colon',
                );
+# zero-width in particular has several unicode documentation variants we allow
+
 plan +@files;
 
 for @files.sort -> $file {