fix: scope tmux history copy to visible pane

[atxtechbro]

Git Statistics

• 1 file changed

Summary

• adjust tmux-copy-history to use the active pane (or last active when run outside tmux)
• limit capture to the visible pane contents (-S -0) so clearing the screen drops prior scrollback
• keep clipboard piping via clipboard_copy for cross-platform support

Testing

• tmux_copy_history (manual) inside tmux

[amazon-q-developer]

⏳ Code review in progress. Analyzing for code quality issues and best practices. You can monitor the review status in the checks section at the bottom of this pull request. Detailed findings will be posted upon completion.

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[amazon-q-developer]

Review Summary

This PR improves the tmux history copy functionality by replacing a simple alias with a more sophisticated function that properly handles pane targeting and limits capture to visible content. The implementation is sound and addresses the stated goals.

Key Changes

• ✅ Replaces global history capture with visible-only content using -S -0
• ✅ Adds proper pane targeting (current pane inside tmux, last pane outside)
• ✅ Includes error handling for missing tmux sessions

Issues Found

• Shell Quoting: Three instances need proper quoting to prevent word splitting and pathname expansion

The changes are functionally correct and improve the user experience by scoping the copy operation to visible content while maintaining cross-platform clipboard support.

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[amazon-q-developer]

Quote the variable expansion to prevent word splitting and pathname expansion.

Suggested change

	target_pane="$(tmux display-message -p '#{pane_id}')"
	target_pane="$(tmux display-message -p "#{pane_id}")"

[amazon-q-developer]

Quote the variable expansion to prevent word splitting and pathname expansion.

Suggested change

	if ! target_pane="$(tmux display-message -p -F '#{pane_id}' -t '{last}' 2>/dev/null)"; then
	if ! target_pane="$(tmux display-message -p -F "#{pane_id}" -t "{last}" 2>/dev/null)"; then

[amazon-q-developer]

Quote the variable expansion to prevent word splitting and pathname expansion.

Suggested change

	alias tmux-copy-history='tmux_copy_history'
	alias tmux-copy-history="tmux_copy_history"