Regular expression "\\d?" giving incorrect output
57154
SCJP6 regex issue
45334
How can I debug a regular expression in Python?
12963
What is a non-capturing group in regular expressions?
1685
Why does this Java regex cause "illegal escape character" errors?
147011
Regular expression for excluding special characters
1805
Do Python regexes support something like Perl's \G?
103704
evaluate expression with backslash in middle of statement
61907
Right way to escape backslash [ \ ] in PHP regex?
17005
polyglossia or bidi bug: [\d\.] gets inverted to [\.\d]
10125
How does this regular expression work?
60560
Tilde operator in Regular expressions
129301
Need to perform Wildcard (*,?, etc) search on a string using Regex
30260
Is there a RegExp.escape function in JavaScript?
28280
Python and regular expression with Unicode
83324
Replacing backslashes with forward slash within double quotes
142285
What's the regular expression that matches a square bracket?
61451
Interesting test of Javascript RegExp