Text Processingflags: gm
Trailing Whitespace (Per Line)
Match trailing spaces and tabs at the end of each line — the regex linters use to flag dirty whitespace.
Try it in RegexPro →Available in
Pattern
regexengine-agnostic
[ \t]+$ (flags: gm)Raw source: [ \t]+$
How it works
[ \t]+ matches one or more space or tab characters. $ with the m (multiline) flag anchors to the end of EACH line, not the whole string. The g flag iterates so a multi-line string surfaces every offending line. Pair with `replace(re, '')` to strip.
Examples
Input
good line\nbad line \nfineMatches
Input
tab here\tand more\t\tMatches
\t\t
Input
no trailing spaceNo match
—Common use cases
- •Linter / formatter rules (eslint, prettier, gofmt)
- •Pre-commit hooks for cleanup
- •Markdown source hygiene
- •Git diff noise reduction