[screen-devel] [bug #61534] long session names break screen with no error message/rails

[anonymous]

URL:
  <https://savannah.gnu.org/bugs/?61534>

                 Summary: long session names break screen with no error
message/rails
                 Project: GNU Screen
            Submitted by: None
            Submitted on: Tue 23 Nov 2021 07:22:00 PM UTC
                Category: Program Logic
                Severity: 3 - Normal
                Priority: 5 - Normal
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
                 Release: 4.8.0
         Discussion Lock: Any
           Fixed Release: None
         Planned Release: None
           Work Required: None

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Details:

screen will allow you to specify a long session name without error, but does
not work if your session name is too long.  For initial sessions, this causes
there to be no session created, but no error:

jmcminn@dukhat:~$ screen -S
averyverylongsesssionnameaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
-d -m bash -c 'ping -c 600 localhost'
jmcminn@dukhat:~$ screen -ls
No Sockets found in /run/screen/S-jmcminn.

jmcminn@dukhat:~$

For renamed sessions, the rename command takes, but results in a "Dead"
session that cannot be attached to or further interacted with:

jmcminn@dukhat:~$ screen -S shortname -d -m bash -c 'ping -c 600 localhost'
jmcminn@dukhat:~$ screen -ls
There is a screen on:
        102297.shortname        (11/23/2021 11:00:57 AM)        (Detached)
1 Socket in /run/screen/S-jmcminn.
jmcminn@dukhat:~$ screen -S shortname -X sessionname
averyverylongsesssionnameaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
jmcminn@dukhat:~$ screen -ls
There is a screen on:
        
102297.averyverylongsesssionnameaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
        (11/23/2021
11:00:58 AM)    (Dead ???)
Remove dead screens with 'screen -wipe'.
1 Socket in /run/screen/S-jmcminn.
jmcminn@dukhat:~$




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