cprint-str throws exception for high values of :width on certain inputs

[greglook]

cprint-str throws exception for high values of :width on certain inputs

[greglook]

Thanks for the detailed report! This sounds like an issue at a deeper layer than puget; the print width is passed directly to fipp, and the only interaction that I can think of that is implicated by the colorization is the use of :pass nodes to avoid counting color markup against the document width. I'm not sure why this would show up only at higher widths, unless the behavior of rrb-vector somehow alters at larger sizes.

[greglook]

Some brief experimentation seems to indicate that this is related to the size of the data structure passed to fipp. Inspecting the print document being rendered showed that puget was doing some (very slightly) suboptimal behavior by passing a no-op [:align ()] structure inside empty collections. Removing this did not fix the problem, but it did raise the :width limit at which the error occurs by the same amount as the number of empty collections in your bad-data sample, which seems significant.

[aeriksson]

I also did some digging, and I agree that it doesn't seem likely that the bug is in puget. I've filed the following issue for fipp: brandonbloom/fipp#53

I have a hunch that the bug is actually in in clojure.core.rrb-vector. However, my attempts to produce a rrb-vector-only test case that triggers the bug have been unsuccessful.