tree 16cbc89c70300e9bf55b2ca8464e5a264ba0a969
parent ee396272d3263eec46c94bb1fa00cd2ca72dd1e7
author Ian Hickson <ian@hixie.ch> 1532995087 -0700
committer GitHub <noreply@github.com> 1532995087 -0700
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Clean up startProgress logic. (#19695) (#20009)

Disallow calling stop() or cancel() multiple times. This means that
when you use startProgress you have to more carefully think about what
exactly is going on.

Properly cancel startProgress in non-ANSI situations, so that
back-to-back startProgress calls all render to the console.