Update COLUMNS env var when fixing column width #254
Description
I love the new --columns option, but when a command adjusts its output based on the current terminal size you get rather ugly output:
(generated with termshot --columns 100 --show-cmd --filename assets/cmd-help.png -- 'pyright-analysis --help')
If I also set COLUMNS the output becomes:
(generated with COLUMNS=100 termshot --columns 100 --show-cmd --filename assets/cmd-help.png -- 'pyright-analysis --help')