Regular expression to match string starting with a specific word

How do I create a regular expression to match a word at the beginning of a string? We are looking to match stop at the beginning of a string and anything can follow it. For

2026 Jan 01

Regular expression to stop at first match

to capture a match between start and the first occurrence of end. Notice how the subexpression with nested parentheses spells out a number of alternatives which between them allow e only

2024 Dec 24

XSL: Meaning of `match="/"` for `xsl:template`

The value of the match attribute of the <xsl:template> instruction must be a match pattern. Match patterns form a subset of the set of all possible XPath expressions. The first,

2025 Jul 14

regex

Is there a way in Python to access match groups without explicitly creating a match object (or another way to beautify the example below)? Here is an example to clarify my motivation for

2024 Dec 10

How to match, but not capture, part of a regex?

A variation of the expression by @Gumbo that makes use of K for resetting match positions to prevent the inclusion of number blocks in the match. Usable in PCRE regex flavours.

2024 Nov 08

python

From the docs on re.match: If zero or more characters at the beginning of string match the regular expression pattern. I just spent like 30 minutes trying to understand why I couldn''t match

2025 Sep 30