Re: [Pan-users] Select Headers with RE in the Subject/Author Entryfield?

[Duncan]

Heinz Mezera posted on Fri, 12 Jun 2015 11:37:54 +0200 as excerpted:

> sometimes a single toggle and once in a while more than one toggle
> achieved the expected result.

=:^)

> Any idea why it get's stuck?

Nothing definitive.  If I was a coder I imagine I could analyze the code 
and see, but...

But from my own experiments, one such case might be deliberate, for 
instance, on typing an opening [, which can't be properly or completely 
parsed until a closing ] appears.  It may be that the code deliberately 
shuts off parsing in this case, and "forgets" to turn it back on again, 
thus leaving the process stuck until toggled.

More broadly, it may be that the process stops any time a non-fixed 
literal is typed.  A . indicates a single char and is thus pretty much 
fixed, while a * indicates zero-or-more, and could trigger a stop if 
there's some doubt how many chars it should cover.  Said doubt would be 
eliminated or at least greatly reduced as soon as the next literal is 
typed, but again, a missing call to reactivate a stalled parse would 
leave the thing "stuck" until toggling reactivates it.

That's the general feeling I get as I watch it, but while it's a 
reasonable explanation, it could well be reasonable and wrong, too.  
Since I don't really read code to any major degree (in some limited 
instances I can read it well enough to for instance hack a broken patch 
into applying, again, etc) here, that's what it remains, a reasonable, 
but possibly incorrect, idea.


-- 
Duncan - List replies preferred.   No HTML msgs.
"Every nonfree program has a lord, a master --
and if you use the program, he is your master."  Richard Stallman