Comment 3 for bug 1179287

This makes me think a bit.

We could do:

“as soon as ‘set -x’ is run, clone stderr, and then use that for any future traces”

We used to do:

“print some parts, do the I/O redir, print some more parts, run the command”, rinse repeat

We now do:

“take note of some parts, do the I/O redir, print everything at once, run the command”, rinse repeat, with minor bugs

We could do either when implementing BASH_XTRACEFD though… (also, just displaying TCOM is probably wrong). This needs serious thought.