Bug 141676

Summary: file watch does not reload when file is deleted and then recreated
Product: [Applications] kpdf Reporter: kde
Component: generalAssignee: Albert Astals Cid <aacid>
Status: RESOLVED INTENTIONAL    
Severity: normal CC: okular-devel, reinhold
Priority: NOR    
Version: 0.5.5   
Target Milestone: ---   
Platform: Fedora RPMs   
OS: Linux   
Latest Commit: Version Fixed In:

Description kde 2007-02-14 11:30:15 UTC 
Version:           0.5.5 (using KDE KDE 3.5.5)
Installed from:    Fedora RPMs
OS:                Linux

I'm using KPDF 0.5.5 on KDE 3.5.5-0.2.fc5 Fedora Core
Release 2.6.18-1.2257.fc5.

Watching a pdf file created by LaTeXPDF usually works
fine, but occasionally it stops functioning. I haven't
figured out what triggers this, but I have found a way
to recover functionality. Namely, I open the file in
KGhostview and tick on "watch file" (which is not 
the default in KGhostview). Once KGhostview watches
the file once successfully, I then open the file in 
KPDF, which now starts to correctly watch the file again.
Comment 1 kde 2007-02-14 11:50:31 UTC 
What triggers the problem in the watch file function seems to be any error
that the LaTeXPDF encounters in the compilation.
Comment 2 Albert Astals Cid 2007-02-14 19:26:43 UTC 
Does that situation delete the pdf file?
Comment 3 Pino Toscano 2007-09-16 03:00:19 UTC 
Ioannis, is there any news about this problem? What about Albert's question?
Comment 4 Wilbert Berendsen 2008-02-16 11:04:10 UTC 
Same problem here, using LilyPond and GhostScript.

Lilypond deletes the PDF file first, and then outputs a new one (the inode number changes).

KPDF most times stops watching a file when it is deleted and recreated a very short while after.

It would be very nice if KPDF just keeps wachting a file, even when it is deleted and recreated again.
Comment 5 Wilbert Berendsen 2008-02-16 11:28:25 UTC 
In the source of both KPDF and Okular I see that it listens to the KDirWatch signal dirty(), but not deleted() or created().

Should this be fixed in KDirWatch or KPDF/Okular?

(The problem is stat KPDF/Okular stop watching a file when it is deleted and recreated shortly thereafter)
Comment 6 Albert Astals Cid 2008-03-18 00:05:34 UTC 
The issue has been implemented on Okular and will be released with KDE 4.1. It won't be fixed on KPDF.