Clarify the main profvis loop

r-lib / profvis

Visualize R profiling data

https://profvis.r-lib.org/

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Closed hadley closed 2 months ago

hadley commented 2 months ago

Ensure that we always terminate RProf() even if the expr errors
Make it a bit more clear how expr works (we regenerate the lazy binding on every iteration)
Ensure we always set lines, even if the expr errors. (This is what lead to the mystifying lines is not a character vector error)