Emacs: List Matching Lines

List Matching Lines, Copy, Count

Alt+x list-matching-lines 【Alt+s o】 (alias of occur)

List all lines in the current file that matches a Regex pattern.

Alt+x copy-matching-lines

Copy lines that matches a regex pattern.

Alt+x count-matches (alias of how-many)

Count matching lines.

Clicking the line jumps to the match location.

Delete Matching Lines, Delete and Copy, Delete Duplicate Lines

Alt+x kill-matching-lines

Copy and delete matching lines

Alt+x delete-matching-lines (alias of flush-lines)

• Delete lines that match a Regex.
• Works on text selection or starts at the line your cursor is on.

Alt+x delete-non-matching-lines (alias of keep-lines)

Delete non-matching lines.

Alt+x delete-duplicate-lines

Delete duplicate lines in text selection.

List Lines in ALL Buffers

Alt+x multi-occur if you want to list lines in ALL buffers.