Questions:

• How do I retrieve the position of the first occurrence of a match?   1 answer
• How can I use backrefs in a lookbehind?   2 answers
• How do I apply switches like /i or /g to a qr regexp?   1 answer
• How do I match for a pattern in an array element delimited with a /   2 answers
• Can I regex & grep to select contiguous lines?   1 answer
• How do I remove a specific keyword from a HTML page   3 answers
• Using RegExp with hashes and returning multiple values   2 answers
• How do I remove control characters?   3 answers
• how do i replace brackets in a regex?   3 answers
• is there an empty string character like in formal regexs?   1 answer
• How do I replace a URL with a clickable hyperlink?   4 answers
• how do i replace link=#ccffcc (ex.) in a html line...   1 answer
• How do I validate an email address?   5 answers
• How do I match/extract a function from a JavaScript file?   3 answers
• how-to strip empty HTML tags like <b> </b>   3 answers
• Using constants in regexes?   3 answers
• How do I use a regex to identify a / character at the beginning of a string?   3 answers
• Subroutines in a regex?   2 answers
• How do i split the output of ps -aef   2 answers
• How do I change .. to the real filename?   5 answers
• Strip that XML!   3 answers
• How do I match this without lookbehind?   5 answers
• How do I match a number range?   3 answers
• Regex anchor speed ?: Is /^.*X/ faster than /X/ ?   3 answers
• How do I strip lines prefixed by a "#"   6 answers
• How to efficiently return the set of REGEX expressions matching 1 line of input?   3 answers
• How do I get what is to the left of my match?   3 answers
• How do I escape '#' pound sign?   2 answers
• How can a regex match every occurence of a string?   1 answer
• How can I split on a string except when inside quotes?   3 answers
• How do I surround commas with escaped double-quotes?   3 answers
• How do I escape metacharacters in a user-defined string?   2 answers
• How would I replace the string 'Red1' with $Red[1]?   2 answers
• How can I transliterate between languages?   1 answer
• How can I match a multi-line regexp?   4 answers
• How do i find $a and replace it with $b when it's preceded by $c?   5 answers
• How do I retrieve specific column values from a table of records?   2 answers
• How do I split a string on highly structured/nested data?   3 answers
• How would I find a piece of html from a sourcefile.html?   2 answers
• Apply regex to entire file, not just individual lines ?   4 answers
• How do I get the last occurrence of a word (or words) in a file?   2 answers
• How do I split up a long string with no spaces?   3 answers
• What can regular expressions NOT do?   7 answers
• How do I match for several strings, matching the longest stringfirst?   2 answers
• How do I extract all text between two keywords like start and end?   7 answers
• How do I write a regex which allows meta-quoting?   1 answer
• How can I find nested delimiters?   5 answers
• How do I split a file into separate sections?   3 answers
• How do I handle mid-line carriage returns in a flatfile database?   5 answers
• How do I escape meta-characters in a user-defined string?   1 answer
• How can use Perl to strip away some nested HTML markup code, like <SCRIPT> ?   4 answers
• How do I find $a only where it's not followed by $b and then replace it with $c?   1 answer
• How do I escape special characters like . / or | in a regular expression?   3 answers
• How do I remove whitespace at the beginning or end of my string?   13 answers
• How do I find the Nth occurrence of a pattern?   7 answers

Please add new questions to Seekers of Perl Wisdom instead (Categorized Questions should be FAQs carefully chosen and worded by more experienced monks).