Re:How does apt render its fancy progress bar?
by hinkley on Wednesday October 13, 2021 @12:05PM
(#28853970)
Many command line tools have been adding 'tty mode' for years so that if you run the command through a pipe you get simpler output that is easier to parse and record. If you're at an interactive shell you get all of the 'special effects'.
You will still find many that don't do this properly, especially if you run the commands through a CI tool which is typically a dead giveaway. Browser based log viewers aren't going to handle VT100 escapes and so you see garbage in the output. In this regard using unicode emojis to pretty things up works more reliably.
I would presume that a screen reader should do the same thing. Turn off tty mode so that the stream is easier to parse.
You will still find many that don't do this properly, especially if you run the commands through a CI tool which is typically a dead giveaway. Browser based log viewers aren't going to handle VT100 escapes and so you see garbage in the output. In this regard using unicode emojis to pretty things up works more reliably.
I would presume that a screen reader should do the same thing. Turn off tty mode so that the stream is easier to parse.