Contrary to my initial thought, it seems this should actually get
assigned to pythondialog.
Running the present-dialog.py quoted above, I can reproduce.
Running this commandline (which should be what python-dialog is
calling), I can't reproduce. Well, I can reproduce the failure, but also
get a useful error message:
$ sudo dialog --yesno "Please check Yes!" 0 65 --backtitle "title"
Error opening terminal: xterm-screen-256color.
Call without sudo shows the expected dialog.
** Also affects: pythondialog (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1350319
Title:
dialog silently fails if terminfo is unavailable
Status in “dialog” package in Ubuntu:
New
Status in “pythondialog” package in Ubuntu:
New
Bug description:
When using dialog python package to present a yesno dialog, it
silently fails if the user has a locally installed terminfo and the
terminfo is unavailable (for example because the dialog is presented
from a script launch via sudo).
To reproduce, you'll need those two files:
1. xterm-screen-256 available at https://gist.github.com/leomao/9866009
2. present-dialog.py inlined here:
$ cat present-dialog.py
import dialog
d = dialog.Dialog()
r = d.yesno("Please select Yes!", backtitle="title", width=65, defaultno=True)
assert r == d.DIALOG_OK
Steps to reproduce:
1. install the xterm-screen-256color terminfo using tic xterm-screen-256color
2. export TERM=xterm-screen-256color
3. run the script as your user and see that the dialog is presented
4. run the script with sudo python present-dialog.py and see that the assert
fails and the dialog is not presented
Expected result:
The dialog library should print an error if the dialog cannot be presented
because the terminfo is not available (since it is only installed for the
current user not for root) or fallback to a dumb terminfo if possible (ie. no
dialog just printing the text and offering a yes/no prompt).
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/dialog/+bug/1350319/+subscriptions
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