[PD] Request for help investigating the xeq sequencer package

Jonathan Wilkes jancsika at yahoo.com
Sat Oct 22 23:55:10 CEST 2016

Hi Fred Jan,What features do you find in the xeq library which couldn't be sustainably 
implemented with abstractions?

      From: Fred Jan Kraan <fjkraan at xs4all.nl>
 To: "pd-list at lists.iem.at" <pd-list at lists.iem.at> 
 Sent: Friday, October 21, 2016 4:30 PM
 Subject: [PD] Request for help investigating the xeq sequencer package
Hi All,

To find out if xeq, the sequencer package created by Krzysztof Czaja in 
2006, is worth fixing, documenting and making a reliable deken package, 
I am looking for someone knowledgeable of and interested in sequencers.

Xeq is a sequencer suite inspired by the [qlist] object, but extended by 
several useful features, only very rudimentary described. At least it 
supports midi files, searching for note sequences in its dictionaries, 
and maybe even some sort of programming to control sequence parsing.

At the moment, xeq compiles but because of the very limited 
documentation; an outdated paper and a few poorly documented patches its 
usage range is unknown.

To some extend I can fix bugs when it is clear what the proper behaviour 
is, but my knowledge of advanced sequencer usage is too limited to find 
out how it should work. This also limits my capability to create useful 
help-patches. So I am seeking help from someone with more than average 
knowledge of sequencers.

I am aware that software can be too complicated to be useful, so at one 
point the conclusion could be that xeq is not worth the effort to 
document and debug it. But so far the framework looks well structured, 
and some of the charted functionality is working very well.

For testing the source is available at 
but I can provide a deken like zip with an executable and available 
documentation for all the usual platforms. No stabilility is guaranteed, 
but it sure it will be 'interesting' (if you like sequencers ;-).

Fred Jan

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