Re: Race condition when setting TERM{,INFO{,_DIRS}}

["Guillaume Maudoux (Layus)" <layus.on@xxxxxxxxx>]

On 30/06/17 14:34, Mikael Magnusson wrote:
> On Fri, Jun 30, 2017 at 1:49 PM, Guillaume Maudoux (Layus)
> <layus.on@xxxxxxxxx> wrote:
> > Thanks Bart,
> >
> > I have found the origin of this issue.
> > There are no threads indeed, but there is caching in ncurses for environment
> > variables.
> >
> > Due to a bug in ncurses' code, it failed to detect that the environment var
> > changed,
> > and so failed to find the terminfo database.
> >
> > I will send a patch upstream, with this list in cc.
> >
> > Zsh could avoid that by initializing the term as late as possible.
> > Calling init_term before parsing zshrc, while nothing required to write in
> > the terminal is premature.
> > Fish for example delays initializing the terminal until the first write.
> > Well, this would have avoided my issue, but it is not sufficient in the
> > general case anyway.
> Plenty of people (including me) write to the terminal from zshrc and
> other initialization files.

Well, I should have said that differently: "The reason why the same 
issue did not appear with other shells is because they postpone term 
initialization for as long as possible"; therefore not triggering the 
caching issue when used in our setup.

It is indeed not a correct nor desirable fix.