how to match numbers with dash or space in between
2223
Regular expression to match 7-12 digits; may contain space or hyphen
134825
How do I remove letters and dashes and dollar signs in a string using a regular expression?
1432
Less than or equal sign
129720
Math escape in listings and surround white space
759
How do I match any character across multiple lines in a regular expression?
57029
Is there a method just write `---` to get an em-dash, putting thinspace both before and after it?
142285
What's the regular expression that matches a square bracket?
33256
Simple regular expression for a decimal with a precision of 2
91683
What regular expression will match valid international phone numbers?
11340
How to read data when some numbers contain commas as thousand separator?
102830
Removing spaces between "words" in math mode
44036
What regex can match sequences of the same character?
7569
How do you match only valid roman numerals with a regular expression?
145646
How to trim whitespace between characters
101144
How to match, but not capture, part of a regex?
130215
Add a space between characters in a String
35850
Using regular expressions to validate a numeric range