Bug #65813 for Curses: refresh() runs only after exit() on Mac OS X

Thu Feb 17 02:44:58 2011 andrew.pennebaker [...] gmail.com - Ticket created

Subject:

refresh() runs only after exit() on Mac OS X

My screen shows some Curses text. A while loop updates the text, but the new text doesn't display until I quit Perl. Specs: Curses 1.28 Perl v5.10.0 (darwin) Mac OS X 10.6.6

Sat Feb 19 16:34:47 2011 GIRAFFED [...] cpan.org - Correspondence added

On Thu Feb 17 02:44:58 2011, mcandre wrote: Show quoted text

> My screen shows some Curses text. A while loop updates the text, but > the new text doesn't > display until I quit Perl.

I presume this while loop is doing something that's supposed to cause a refresh (such as calling refresh()), or you wouldn't be reporting this. The subject says "refresh() runs only after exit()." Does this really mean the Curses refresh() routine doesn't run, or just that the refresh doesn't occur, as seen on the screen? Assuming the latter, I can imagine something in the process buffering output causing this.

Sat Feb 19 16:34:48 2011 The RT System itself - Status changed from 'new' to 'open'

Sat Feb 19 16:51:40 2011 andrew.pennebaker [...] gmail.com - Correspondence added

Subject:	Re: [rt.cpan.org #65813] refresh() runs only after exit() on Mac OS X
Date:	Sat, 19 Feb 2011 16:51:09 -0500
To:	bug-Curses [...] rt.cpan.org
From:	Andrew Pennebaker <andrew.pennebaker [...] gmail.com>

Theory: Refresh screen once each iteration inside the while loop. Practice: The screen is refreshed exactly once, when the program is sent SIGINT via pressing Control+C. On Sat, Feb 19, 2011 at 4:34 PM, GIRAFFED via RT <bug-Curses@rt.cpan.org>wrote: Show quoted text

> <URL: https://rt.cpan.org/Ticket/Display.html?id=65813 > > > On Thu Feb 17 02:44:58 2011, mcandre wrote:

> > My screen shows some Curses text. A while loop updates the text, but > > the new text doesn't > > display until I quit Perl.

> > I presume this while loop is doing something that's supposed to cause a > refresh (such as calling refresh()), or you wouldn't be reporting > this. The subject says "refresh() runs only after exit()." Does this > really mean the Curses refresh() routine doesn't run, or just that the > refresh doesn't occur, as seen on the screen? > > Assuming the latter, I can imagine something in the process buffering > output causing this. > >

Sat Feb 19 16:53:26 2011 andrew.pennebaker [...] gmail.com - Correspondence added

From:

andrew.pennebaker [...] gmail.com

Theory: Refresh screen once each iteration inside the while loop. Example: while (1) { # ... $con->refresh; } Practice: The screen is refreshed exactly once, when the program is sent SIGINT via pressing Control+C.