I've certainly never tested it with conditionals.
I think it's the conditional indeed, because it works smoothly when I re-write it to not use a conditional:
%
^
\s*
( # <1>
# Single tags like <foo/>
<
\s*
[a-zA-Z:]+
(?:
\s*[a-zA-Z:]*
\s* = \s*
(?:'[^']*'|"[^"]*")
)*
\s*
/\s*
>
|
# Tags in pairs like <foo>content</foo>
<
\s*
([a-zA-Z:]+) # <2/>
(?:
\s*[a-zA-Z:]*
\s* = \s*
(?:'[^']*'|"[^"]*")
)*
\s*
>
(?:[^<>]* | (?1))*
<\s*/\s*\2\s*>
) # </1>
\s*
$
%x
<foo><bar></bar></foo> # Match
<foo><bar></foo></bar> # No match
<foo><bar/></foo> # Match
<foo><bar></foo> # No match
<foo bar=baz/> # No match
<foo bar="baz"> # No match
<foo bar="baz"/> # Match
< fooo / > # Match
<foo/>foo # No match
foo<foo/> # No match
<foo>foo</foo> # Match
<foo><bar/>foo</foo> # Match
#<a><b><c></c></b></a> # No match (WRONG!!)
Now, there's still the three-level-deep problem...
U28geW91IGNhbiBhbGwgcm90MTMgY
W5kIHBhY2soKS4gQnV0IGRvIHlvdS
ByZWNvZ25pc2UgQmFzZTY0IHdoZW4
geW91IHNlZSBpdD8gIC0tIEp1ZXJk
-
Are you posting in the right place? Check out Where do I post X? to know for sure.
-
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big>
<blockquote> <br /> <dd>
<dl> <dt> <em> <font>
<h1> <h2> <h3> <h4>
<h5> <h6> <hr /> <i>
<li> <nbsp> <ol> <p>
<small> <strike> <strong>
<sub> <sup> <table>
<td> <th> <tr> <tt>
<u> <ul>
-
Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
be used, extreme care should be
taken to ensure that their contents do not
have long lines (<70 chars), in order to prevent
horizontal scrolling (and possible janitor
intervention).
-
Want more info? How to link
or How to display code and escape characters
are good places to start.
|