[gdb/testsuite] Add gdb.base/color-prompt.exp
After updating the documentation in commit cf03713dd1c ("[gdb/cli] Document
\001 and \002 usage for set prompt"), I started to wonder if I could reproduce
the CLI issue described in PR cli/28887 using the TUI.
That turned out not to be the case, but I noticed handling of the markers in
tui_puts and tui_puts_internal, and no test-case exercising this, so I
decided to add this.
After doing so in gdb.tui/color-prompt.exp, I realized I could use the same
code to test the CLI case.
Add test-case gdb.base/color-prompt.exp that shares code with
gdb.tui/color-prompt.exp in gdb.tui/color-prompt.exp.tcl.
For the CLI case, I was hoping to reproduce the behaviour described in the PR,
but it didn't trigger.
FTR, I manually reproduced the behaviour and used script to record it. I
observed the following sequence after the C-a:
- ^M (CR) : go to start of line
- ^[[K (EL) : erase line
- ^M (CR) : go to start of line
- ^[[31m(gdb) ^[[0m : output prompt
- some long command : output text
- ^M (CR) : go to start of line
- ^[[C, 15 times (CUF): cursor forward 15 times
giving me:
...
(gdb) some long command
^
...
Perhaps we'll trigger this on some other os, or once we start using a
different TERM value.
Tested on x86_64-linux.
4 files changed
