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Re: PM_TAGGED and PM_TAGGED_LOCAL being set simultaneously (functions -T -t f)
- X-seq: zsh-workers 48588
- From: Daniel Shahaf <d.s@xxxxxxxxxxxxxxxxxx>
- To: Peter Stephenson <p.w.stephenson@xxxxxxxxxxxx>
- Cc: zsh-workers@xxxxxxx
- Subject: Re: PM_TAGGED and PM_TAGGED_LOCAL being set simultaneously (functions -T -t f)
- Date: Thu, 15 Apr 2021 16:21:15 +0000
- Archived-at: <https://zsh.org/workers/48588>
- In-reply-to: <email@example.com>
- List-id: <zsh-workers.zsh.org>
- References: <20210414150337.GA23748@tarpaulin.shahaf.local2> <firstname.lastname@example.org>
Peter Stephenson wrote on Wed, Apr 14, 2021 at 16:22:56 +0100:
> > On 14 April 2021 at 16:03 Daniel Shahaf <d.s@xxxxxxxxxxxxxxxxxx> wrote:
> > As y'all recall, «functions -T» and «-t» set the XTRACE option for calls
> > to the named function.
> > With that in mind, in the following code:
> > [[[
> > f() g
> > g() :
> > functions -T f
> > functions -t f
> > f
> > ]]]
> > Should XTRACE be on or off when g is run? Or should an error be raised
> > before g is called?
> > And if -t were set first and -T second?
> The way the documentation is written:
> The flag -t turns on execution tracing for this function;
> the flag -T does the same, but turns off tracing for any named (not
> anonymous) function called from the present one, unless that func‐
> tion also has the -t or -T flag.
> makes it sound as if turning off for called functions is more powerful behaviour,
> in which case -T should always be used if specified. But it doesn't actually
> *say* that and could be rewritten anyway, so it's not much of a steer. Having
> one flag cause another to be ignored is pretty standard behaviour and relatively
> straightforward to implement, though.
So, to be clear, you're proposing that setting either flag should unset
the other? Sounds good to me; just making sure we're on the same page.
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