From github.com/darlingm/tmux, branch pr5516-regression-fixes. Adds 9
regression tests covering gaps found in the redraw-damage-rectangles
branch: screen-write full/region redraw fallback, same-session window
switches, wide-character clipping at damage edges, pane prompts and
status lines surviving damage, floating-pane status format refresh,
and multi-client damage delivery.
redraw-multiclient.sh is adapted here to use ASCII pane borders
(pane-border-lines simple) instead of darlingm's original UTF-8
borders: the original reliably "failed" under this test's nested
tmux-in-tmux harness (relaying through an outer tmux client) due to
that harness mis-rendering a cell that held a multi-byte UTF-8 border
character being overwritten by later plain content - confirmed to be
a nested-relay artifact, not a real bug, by replaying the identical
drag sequence against a real terminal (xterm), where it never
reproduces. ASCII borders avoid the artifact; the test still reliably
catches the real "damage consumed by only one client" bug it targets
(verified by reintroducing that bug and confirming the test fails).
The other 8 tests are added verbatim from darlingm's branch. Four of
them (popup-drag-status-line.sh, popup-drag-wide-character.sh,
popup-drag-pane-prompt.sh, switch-client-redraw.sh) currently FAIL on
this branch, since the source fixes they test for have not been
merged yet - only the tests are being added here.
Co-Authored-By: Michael K. Darling <darlingm@gmail.com>
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
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