Errata

As it turns out (at least on some systmes), Perl's simple print is sometimes not...
should be:
As it turns out (at least on some systems), Perl's simple print is sometimes not...

p40, IN PRINT: second paragraph;
"The is are now much nicer "

SHOULD BE:
"The result is now much nicer "

p51, IN PRINT: 2nd paragraph above letter to Tom Cruise;
"... each substitution to replacements them all, not just one. "

SHOULD BE:
"... each substitution to replace them all, not just one. "

p58, IN PRINT: line 3;
"print "From: Jeffrey Friedl <jfriedl@regex.info>
"; "

SHOULD BE
"print "From: jfriedl@regex.info (Jeffrey Friedl)
"; "


p63, IN PRINT: Figure 2-7;
Matched while checking lookahead
Result of lookahead

SHOULD BE:
Matched while checking lookbehind
Result of lookbehind

p63, IN PRINT: Table 2-1, 3rd row;
"...at which a comma is inserted. "

SHOULD BE:
"...at which an apostrophe is inserted. "

p79, IN PRINT: First sentence of (5);
"...marked all the doubled words, we want keep only logical... "

SHOULD BE:
"...marked all the doubled words, we want to keep only logical... "

p80, IN PRINT: third paragraph;
"Still, the task of showing the concepts is made a bit easier due to a unique
feature of Perl among advanced languages that regular expressions are a "first class,"
low-level feature of the language. "

SHOULD BE:
"Still, the task of showing the concepts is made a bit easier due to a Perl feature
unique among advanced languages, which is that regular expressions are a "first class",
low-level feature of the language. "

p84, IN PRINT: last sentence of second paragraph;
"...next chapter is devoted to it. "

SHOULD BE:
"...next chapter is devoted to them. "

Printed: which could be freely incorporate by others
Fixed: which could be freely incorporated by others

the phrase "some of mechanics"
should be "some of the mechanics".

p97, IN PRINT: first paragraph;
"each was just chosen by the developers who happened to have thought was the best
approach at the time "

SHOULD BE:
"each was just chosen by the developers who thought it was the best approach at the time.

p113, IN PRINT: toward bottom of 2nd section;
[.span-ll.]]>

SHOULD BE:
[.span-ll.]]

p114, IN PRINT: 2nd-to-last para;
"... some of the control shorthands they... "

SHOULD BE:
"... some of the character shorthands they... "

p123, IN PRINT: 2nd-to-last para;
"...may seem a bit odd a first... "

SHOULD BE:
"...may seem a bit odd at first... "

p135, IN PRINT: first para;
"turns `C:\WINDOWS\' into `C:\\WINDOWS\\' "

SHOULD BE:
"turns `C:\WINDOWS\' into `C\:\\WINDOWS\\' "

AUTHOR'S NOTE: This changes makes the statement technically correct, at the cost of slighly muddling the point.



p136, table, 2nd row
The table should note that GNU Emacs supports, within the replacement string, \& to represent
the text of the entire match, and \1, \2, etc. for parenthesized submatches.

"The else part my be..."

SHOULD BE:

"The else part may be..."

p139, 3rd-last-para
Printed: can used as the if test.

Fixed: can be used as the if test.

p160, first line
Printed: Let's look a simple example

Fixed: Let's look at a simple example

p165, last paragraph before heading
Printed: Actually, there's could be...

Fixed: Actually, there could be...

The incorrect atomic grouping regex is currently
(?>\"|[^"])*+
but it should be
(?>\"|[^"])*
(the last + should be removed).

Additionally, "as if" in the second to last sentence
should be "like".

"...could case a very rude surprise..."

SHOULD BE:

"...could cause a very rude surprise..."

"...performance of a regex like can tell you..."

SHOULD BE:

"...performance of a regex like this can tell you..."

p232, first bullet
Printed: ...or other setup that must done, do it before...

Fixed: ...or other setup that must be done, do it before...

p240, footnote
Printed: For example, I might insert in at the marked...

Fixed: For example, I might insert it at the marked...

p244, last line
Printed: (which is fast way to search...

Fixed: (which is a fast way to search...

p246, fourth line
Printed: Similar optimizations involves A, ...

Fixed: Similar optimizations involve A, ...

p280, mid-page
Printed: match: 1> at the very start...

Fixed: match: 1) at the very start...

p305, last code snippet
Printed: perl -e 'print qr/ w+ /x, "
"'

Fixed: perl -e 'print qr/ w+ /ix, "
"'

Printed: Normally, the replacement operator is evaluated...
Fixed: Normally, the replacement operand is evaluated...

"That example splits the target string on a single character, but it you can split
on..."
should read:
"...but you can split it on..."

p325, first bullet point
Printed: ("s", "h", "o", &bigmidddot, "s", "t")

Fixed: ("s", "h", "o", ..., "s", "t")

p325, second bullet point
Printed: It's almost the same as s+, except that leading whitespace is skipped. Trailing
whitespace is ignored as well if an appropriately large (or negative) chunk-limit operand is given.

Fixed: It's almost the same as s+, except that leading whitespace is skipped.

p339, 2nd-to-last paragraph
Printed: ...Programming Perl and Object Oriented Perl show discuss why...

Fixed: ...Programming Perl and Object Oriented Perl discuss why...

"...skeleton the expression:"

SHOULD BE:

"...skeleton of the expression:"

p341, fifth line
Printed: Adding these items to skeleton expression gives us:

Fixed: Adding these items to the skeleton expression gives us:

p351, first line
Printed: Not all regex operands can be cached. Consider this snippet:

Fixed: Not all regex operands can be cached directly. Consider this snippet:

p359, mid-page
Printed: ...is found. On most systems, ...

Fixed: ...is found. (On most systems, ...

p371, last line of code snippet
Printed: .findNext(); (3) , (5)

Fixed: .findNext(); // (3) , (5)

Should be a full stop not a comma.

p407, fifth paragraph
Printed: The following examples all which work with...

Fixed: The following examples all work with...

p408, mid-page snippets
Three occurances of "Subject" within a quoted string are italicized. They shouldn't be.

Printed: ...dispense with the MatchCollection variable altogether
Fixed: ...dispense with the MatchCollection object altogether

417, ".Replace" example
Printed: Text = R_CapWord.Replace(Text, "<B>$1</B>")
Fixed: Text = R_CapWord.Replace(Text, "<B>$0</B>")

424, 2nd to last para
Printed: ..where in the target text the match was found.
Fixed: ..where in the target text the group match was found.