To see the flag in action, export GECKO_BLOCK_DEBUG_FLAGS="float-manager" and open a page containing float elements. For example: $ GECKO_BLOCK_DEBUG_FLAGS="float-manager" ./mach run layout/reftests/floats/orthogonal-floats-1a.html MozReview-Commit-ID: 7Rb45ophewf
1.2 KiB
1.2 KiB