#+TITLE: QA 08 — Fringe
#+TODO: TODO | PASS FAIL SKIP

* How to run
  : emacs --no-init-file -l qa/08-fringe/test.el
  : EMACS_GPU_DISABLE=1 emacs --no-init-file -l qa/08-fringe/test.el

* Checklist

** TODO 8.1 Continuation arrows — appear when line is truncated
   The right fringe must show a right-pointing arrow on truncated lines.
   With hscroll active, the left fringe must show a left-pointing arrow.
   Failure: fringe is blank; or arrows appear on non-truncated lines.

** TODO 8.2 Empty-line indicator — tildes at end of buffer
   After the last line of content, each visual line must show a tilde
   indicator in the left fringe.
   Failure: no tildes, or tildes appear on content lines.

** TODO 8.3 Custom bitmap — renders at correct position and color
   The custom ">>" bitmap defined in the test must appear on marked lines
   in the color set by the face.
   Failure: bitmap is missing, in the wrong column, or wrong color.

** TODO 8.4 Fringe background color
   The entire fringe column must have the yellow background defined in
   the test.
   Failure: fringe background remains the default frame color.

** TODO 8.5 Tall bitmap does not bleed over the mode-line
   Scroll to the last line before the mode-line. The empty-line tilde
   bitmap (which can be 72px tall) must be clipped to the row's visible
   area and must not overwrite the mode-line.
   Failure: pixels from the bitmap appear over the mode-line.

** TODO 8.6 Fringe width changes take effect
   Changing fringe-mode to a wider value must immediately make the
   fringe column visibly wider.
   Failure: fringe width does not change, or changes only after redisplay.