Solved (t)csh hangs on logout when merging .history files

[Mjölnir]

I have set in /etc/csh.cshrc

    [...]
    set histdup = erase
    set history = 5000
    set savehist = (5000 merge lock)
    [...]

i.e. the ~/.history gets merged with the previous one. IIUC the lock is necessary to avoid clashes when a csh(1)ell is closed while another one is still merging it's .history. Occasionally csh(1) hangs on logout, blocking the getty(8) on the virtual terminal to open the next login(8) or in case of a graphical terminal, blocking it from closing the tab. Then I have to manually delete ~/.history.lock to let the shell close itself, leaving over some old ~/.history-12345 files. Does anyone have a solution or workaround for this issue? Yes I know I can RTSL & will do so, but I'd like to ask here 1st.

 

[Mjölnir]

FMLU this bug is in progress as PR 252663. Setting this to solved as it seems to be fixed with the incorpocation of upstream tcsh-6.22.03 into FreeBSD base.