curses.textpad.Textbox backspace support

[emeaudroidemeaudroid]

BPO	16232
Nosy	@ned-deily

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2012-10-14.14:38:05.797>
labels = ['extension-modules', 'easy', 'type-feature']
title = 'curses.textpad.Textbox backtrace support'
updated_at = <Date 2019-03-15.22:29:17.594>
user = 'https://bugs.python.org/emeaudroidemeaudroid'

bugs.python.org fields:

activity = <Date 2019-03-15.22:29:17.594>
actor = 'BreamoreBoy'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Extension Modules']
creation = <Date 2012-10-14.14:38:05.797>
creator = 'emeaudroid.emeaudroid'
dependencies = []
files = []
hgrepos = []
issue_num = 16232
keywords = ['easy']
message_count = 3.0
messages = ['172888', '223108', '237423']
nosy_count = 3.0
nosy_names = ['ned.deily', 'emeaudroid.emeaudroid', 'ragreener']
pr_nums = []
priority = 'normal'
resolution = None
stage = 'test needed'
status = 'open'
superseder = None
type = 'enhancement'
url = 'https://bugs.python.org/issue16232'
versions = ['Python 3.5']

Linked PRs

• gh-60436: fix curses textbox backspace/del #103783

[emeaudroidemeaudroid]

python: 2.6.6
curses' revision: 61064 2008-02-25 16:29:58Z andrew.kuchling

line 93 and 102 of curses/textpad.py

could you replace the backspace's specific chars codes by using this dedicated curses' function retrieving the currently in-use char's code ?

ord( curses.erasechar( ))

this one would make specific erase char specified to term supported, unlike curses.ascii.BS, curses.KEY_BACKSPACE that are specifics to most configurations indeed.

at least adding the curses.ascii.DEL char's code seems legit na ?

[BreamoreBoy]

@emeaudroid please accept our apologies for the delay in getting back to you. Can someone take a look at this please as I don't have a *nix box to play with.

[ned-deily]

This has also been reported in bpo-23598 including a patch to add DEL as suggested. I have little experience with curses so I don't have any insight as to pros and cons of using erasechar() rather than the hardcoded BS and DEL chars. A test would be nice if someone has a creative approach for creating one. I see that a patch for bpo-13051 contains a suggested test for another problem with curses.textpad; perhaps it could be adapted.

[ProfDeSI]

Hello there, I am digging up this discussion because I am starting to use curses and I can't erase the text I type inside a Textbox (I use Thonny on a Mac) and it seems that I have stumbled upon a deep rooted issue. Since the previous message is seven years old, am I right if I say that this bug was forgotten and never fixed ?

[k3lseytaylor]

Also running this issue (Iterm2 on Mac)
Textbox backspace is not registering and can only delete using Ctrl + H

[aidanmelen]

@k3lseytaylor I ran into the same issue. Maybe this example will help.

[mblahay]

@ProfDeSI @k3lseytaylor @aidanmelen

I am attempting to reproduce this issue, but not having any success. Please confirm which version of Python you are using.

[aidanmelen]

@mblahay i think this issue is specific for macOS and python:3.11-alpine docker image.