[GH-ISSUE #684] Textarea delete actions handle newlines incorrectly (Option+Backspace and Cmd+Backspace) #950

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opened 2026-03-14 09:08:11 +03:00 by kerem · 0 comments

kerem commented

2026-03-14 09:08:11 +03:00

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Originally created by @slimewell on GitHub (Feb 13, 2026).
Original GitHub issue: https://github.com/anomalyco/opentui/issues/684

Context

This issue was found while fixing OpenCode input behavior (anomalyco/opencode#8645).
The fix should be in OpenTUI action handling so all textareas behave consistently.

Current behavior

Option+Backspace (delete-word-backward) can remove a newline when deleting the first word of a line (when there is a line above it).
Cmd+Backspace (delete-to-line-start) deletes to the start of the current line, but does not remove the newline when the cursor is already at the start of a line.

Expected behavior

Option+Backspace: delete the previous word only and keep the newline.
Cmd+Backspace:
- mid-line: delete to start of current line
- at start of line: delete previous newline (join with previous line)

Reproduction

Input:

first line of words
second line doo
third foo bar

Place cursor after third on the third line.
Press Option+Backspace.

Then test Cmd+Backspace:

mid-line should delete to line start
line-start should remove previous newline and join lines

Moved here as this is action-level behavior (delete-word-backward / delete-to-line-start) and should be fixed in OpenTUI rather than app-level onKeyDown workarounds.

Originally created by @slimewell on GitHub (Feb 13, 2026). Original GitHub issue: https://github.com/anomalyco/opentui/issues/684 ## Context This issue was found while fixing OpenCode input behavior (`anomalyco/opencode#8645`). The fix should be in OpenTUI action handling so all textareas behave consistently. ## Current behavior - `Option+Backspace` (`delete-word-backward`) can remove a newline when deleting the first word of a line (when there is a line above it). - `Cmd+Backspace` (`delete-to-line-start`) deletes to the start of the current line, but does not remove the newline when the cursor is already at the start of a line. ## Expected behavior - `Option+Backspace`: delete the previous word only and keep the newline. - `Cmd+Backspace`: - mid-line: delete to start of current line - at start of line: delete previous newline (join with previous line) ## Reproduction Input: first line of words second line doo third foo bar 1. Place cursor after `third` on the third line. 2. Press `Option+Backspace`. Then test `Cmd+Backspace`: - mid-line should delete to line start - line-start should remove previous newline and join lines Moved here as this is action-level behavior (`delete-word-backward` / `delete-to-line-start`) and should be fixed in OpenTUI rather than app-level `onKeyDown` workarounds. ## Related - anomalyco/opencode#436 - anomalyco/opencode#6314 - anomalyco/opencode#8645