Update terminal width when progress animation is updated #463
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Without updating the terminal width for each progress update, a progress line may be printed as more than one line, so line clearing will not work as expected and many lines will be printed when overflowing max columns of line.
Ninja also checks the terminal width every line print: https://github.com/ninja-build/ninja/blob/fd7067652cae480190bf13b2ee5475efdf09ac7d/src/line_printer.cc#L110
This particularly improves the build and test progress report of SwiftPM.
Before
old.mov
After
new.mov