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ANSI Escape Sequence (Terminal Control)

Extraction

Matches an ANSI escape sequence (e.g., color codes, cursor movement).

/\x1b\[[0-9;?]*[A-Za-z]/

How it works

Useful for stripping ANSI codes from log files before searching. Form: ESC, [, parameter bytes (digits, ;, ?), terminator letter.

Test Cases

Should Match

[31m
[2J
[?25h

Should NOT Match

[31m
\x1b31m
plain text

Quick Summary

Matches an ANSI escape sequence for terminal styling and cursor control.

Use Cases

When to use it

Stripping ANSI codes from logs before grep or storage
Counting visible vs raw characters when terminal output is captured to a file
Sanitizing terminal output displayed in a web UI