$ docker run --rm --name validator-giflib-usage-giflib-tools-giftext-grid-colormap-2536 -t --mount type=bind,src=/tmp/validator-status-giflib-usage-giflib-tools-giftext-grid-colormap,dst=/validator/status validator-giflib-shared bash -lc 'set -euo pipefail
/validator/tests/_shared/install_override_debs.sh
exec /validator/tests/_shared/run_library_tests.sh "$@"' validator-testcase giflib usage-giflib-tools-giftext-grid-colormap -- bash -c 'PS4=$1; shift; set -x; source "$@"' validator-xtrace '__VALIDATOR_XTRACE__ ' /validator/tests/giflib/tests/cases/usage/usage-giflib-tools-giftext-grid-colormap.sh
no override packages found; continuing with apt originals

/validator/tests/giflib/tests/fixtures/samples/pic/gifgrid.gif:

	Screen Size - Width = 100, Height = 100.
	ColorResolution = 3, BitsPerPixel = 3, BackGround = 0, Aspect = 0.
	Has Global Color Map.

	Global Color Map:
	Sort Flag: off
  0: a5h b2h a5h     1: 04h 11h a5h     2: a5h 11h 04h     3: ffh ffh ffh   
  4: ffh 00h 00h     5: 00h 00h ffh     6: 00h 00h 00h     7: 00h 00h 00h   

GIF89 graphics control (Ext Code = 249 [ ]):
	Disposal Mode: 0
	User Input Flag: 0
	Transparency on: no
	DelayTime: 0
	Transparent Index: -1

Image #1:

	Image Size - Left = 0, Top = 0, Width = 100, Height = 100.
	Image is Non Interlaced.
	No Image Color Map.

GIF file terminated normally.