Note that this isn't really a word in the English sense; it's just
chunks of consecutive non-whitespace characters.
-To work with only alphanumeric sequences, you might consider
+To work with only alphanumeric sequences (including underscores), you
+might consider
while (<>) {
foreach $word (m/(\w+)/g) {
=head2 What good is C<\G> in a regular expression?
-The notation C<\G> is used in a match or substitution in conjunction the
-C</g> modifier (and ignored if there's no C</g>) to anchor the regular
-expression to the point just past where the last match occurred, i.e. the
-pos() point. A failed match resets the position of C<\G> unless the
-C</c> modifier is in effect.
+The notation C<\G> is used in a match or substitution in conjunction with
+the C</g> modifier to anchor the regular expression to the point just past
+where the last match occurred, i.e. the pos() point. A failed match resets
+the position of C<\G> unless the C</c> modifier is in effect. C<\G> can be
+used in a match without the C</g> modifier; it acts the same (i.e. still
+anchors at the pos() point) but of course only matches once and does not
+update pos(), as non-C</g> expressions never do. C<\G> in an expression
+applied to a target string that has never been matched against a C</g>
+expression before or has had its pos() reset is functionally equivalent to
+C<\A>, which matches at the beginning of the string.
For example, suppose you had a line of text quoted in standard mail
-and Usenet notation, (that is, with leading C<E<gt>> characters), and
-you want change each leading C<E<gt>> into a corresponding C<:>. You
+and Usenet notation, (that is, with leading C<< > >> characters), and
+you want change each leading C<< > >> into a corresponding C<:>. You
could do so in this way:
s/^(>+)/':' x length($1)/gem;
projects / p5sagit/p5-mst-13.2.git / blobdiff