commands on tbreak breakpoints, should they work?

[Doug Evans]

gdb = 5.2.1

I'm unable to add commands to tbreak breakpoints because gdb first
deletes the breakpoint and then it looks for any breakpoints
with commands to run.

The docs say
"You can give any breakpoint (or watchpoint or catchpoint) a series of
commands to execute when your program stops due to that breakpoint."

Is this a gdb bug or doc bug?

---
bash$ gcc -g hello.c
bash$ gdb-5.2.1 ./a.out
(gdb) tbreak main
(gdb) commands
echo foo\n
end
(gdb) run