Hi all,
I’m seeing strange behavior with readline's interaction with ANSI codes.
Here’s a minimal sample script that reproduces the behavior:
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(use-modules (system repl repl) (system repl common))
(use-modules (ice-9 readline))
(define (custom-prompt repl) "\x1b[34m :D > \x1b[0m")
(activate-readline)
(repl-default-option-set! 'prompt custom-prompt)
(start-repl)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
Run this and you’ll get a Guile shell. Into that shell, type
'(1 2 3 4 5 6 7 8 9 10)
The final parenthesis will highlight a character midway through the string
(instead of the first parenthesis).
The same issues happen if you try to scroll through history: lines end up
overlapping in strange ways.
Removing the ANSI codes from custom-prompt resolves the issue, but I’d really
like to have a colored prompt and correct readline behavior.
Does anyone have any ideas?
Thanks,
Matt
