Re: Re: Re: Persistence of a window's title?

[Steve Ross]

Neal,

Thanks, thanks, thanks!
You wrote:

   I googled your prompt command, it is probably your system default.

My "/etc/bashrc" looks to be exactly the same one as in the book that 
you referenced.  That explains the particular content of PROMPT_COMMAND.

You wrote:

   ...it is the culprit and recommends "unset PROMPT_COMMAND" ...

I stumbled upon unsetting PROMPT_COMMAND when I looked at another system 
where the window titles persist... and I noticed that that system does 
not have PROMPT_COMMAND set.  I confirmed that unsetting that shell 
variable on my current system does the trick.

(I've referred to the manual page for "screen" many times, but somehow I 
missed the section that explains the "title-string escape-sequence" and 
the "title-escape-sequence".)

Thanks again,

-- Steve Ross

On 5/19/2020 3:15 PM, Neal Fultz wrote:
I googled your prompt command, it is probably your system default. 
This book lists it as a default in /etc/bashrc for fedora, for example:

https://books.google.com/books?id=0VRnDwAAQBAJ&pg=PA260&lpg=PA260&dq=printf+%5C033k%25s@%25s:%25s%5C033%5C%5C&source=bl&ots=yDkW0btNGw&sig=ACfU3U0JX62IdmvjkAxx1lMi6ExhfR3kuA&hl=en&sa=X&ved=2ahUKEwiAr5ei3sDpAhU8GDQIHYXYAv8Q6AEwAXoECAoQAQ#v=onepage&q=printf%20%5C033k%25s%40%25s%3A%25s%5C033%5C%5C&f=false

This person https://unix.stackexchange.com/a/163692/50441 says that it 
is the culprit and recommends "unset PROMPT_COMMAND", and there's a 
comment to also check $PS1.

Best,

Neal

On Tue, May 19, 2020 at 12:07 PM Steve Ross <sr...@forcepoint.com 
<mailto:sr...@forcepoint.com>> wrote:

    Neal,

    Thank you very much for your suggestions.  I looked at the links
    but I am still puzzled (although I know next to nothing about
    Xterm or "termcapinfo".)

    Here is my PROMPT_COMMAND:

        $ echo $PROMPT_COMMAND
        printf "\033k%s@%s:%s\033\\" "${USER}" "${HOSTNAME%%.*}"
    "${PWD/#$HOME/\~}"

    I don't think that does any Xterm title resetting.

    One other line in my "~/.screenrc" file that may be relevant is:

        term screen-256color

    Any other pointers?

    -- Steve Ross

    On 5/18/2020 4:37 PM, Neal Fultz wrote:
    I would recommend checking your $PROMPT_COMMAND - some shell
    configurations reset the Xterm title, and screen can pick that up
    as a window title or pass it through depending on your environment.

    See also
    https://www.tldp.org/HOWTO/Bash-Prompt-HOWTO/x395.html and
    
https://unix.stackexchange.com/questions/6065/gnu-screen-new-window-name-change 
for
    example

    On Mon, May 18, 2020 at 2:33 PM Steve Ross <sr...@forcepoint.com
    <mailto:sr...@forcepoint.com>> wrote:

        Is a screen-window's title supposed to persist?

        I have created two windows in one "screen" session.  I have
        titled them both by typing "CONTROL-a" followed by a colon
        followed by the word "title" followed by my title, one for
        each window.

        I have the titles permanently displayed at the bottom of the
        window by two lines in my "~/.screenrc" file:

        hardstatus alwayslastline
            hardstatus string "%w"

        I don't know if it makes any difference, but I also have

        altscreen on

        The problem is that the screen-window titles do not persist. 
        After I enter a command like "ls", the title changes to
        something like

        username@machine:~/Man

        where the directory name is the first first three characters
        of the name of the current directory in my home directory.

        Is the lack of persistence working as designed, a bug, or am
        I missing something?

        My version/release of "screen" on Fedora is 4.6.2-8.fc30.

        Thanks for any help,

        -- Steve Ross