fix: pass through navigation keys when tmux can't move - #472
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When not in Vim, only run select-pane if an adjacent pane exists (and optionally when not zoomed). Otherwise send the key through so default bindings like Ctrl-l (clear screen) still work in single-pane or at pane edges.
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Summary
This change makes pane-navigation keybindings smarter by only running
select-panewhen it can actually succeed. When the window is zoomed or there is no neighboring pane in the requested direction, the key is passed through to the application instead.Motivation
Prevent no-op
select-panein zoomed windows or at pane edges from swallowing navigation keys; pass them through to the app instead.Behavior matrix
send-keys <key>(unchanged).select-pane(navigation).send-keys <key>(pass-through).Tested
resize-pane -Z) or at pane edges / single pane.