Is branch 6.3 still maintained?

[denis.be...@gmail.com]

I see a release r955 on source forge, with a fix  "for return value constraint crash".

The release is only for branches 6.4 and 7.0. 

Similarly, previously, I noticed that  the introduction of function "with-open-file" was not done in branch 6.3.

Is branch 6.3 still maintained ?

[CLIPS Support]

The short answer is no. I don't recall if I've made any exceptions to this rule, but new features are only added to the current major.minor version of the software (in this case, 6.4). I frequently backport bug fixes to the prior version of CLIPS, but I don't necessarily do that at the same time I fix it in the current version. 

[denis.be...@gmail.com]

About function "with-open-file" (introduced at my request), would it be much work to add it to branch 6.3?

I'm using CLIPS for my CSP-Rules pattern-based solver of finite constraint satisfaction  problems (https://github.com/denis-berthier/CSP-Rules-V2.1). The current version works for any of CLIPS 6.3, 6.4 and 7.0. and I would like to maintain this compatibility as much as possible, for reasons explained below (*). On the other hand, I would like to be able to switch to function "with-open-file" wherever function "open" is currently used.

(*) I have very large computations and published associated data on Zenodo, all done with branch 6.3 long ago. I haven't noticed any difference in functionality or computation times  between 6.3 and 6.4 (for the features of CLIPS used in these computations). But I would like the CSP-Rules users be able to use branch 6.3 to reproduce the  same results with the same version of CLIPS  originally used to produce them.

[CLIPS Support]

I'll take a look.