Hello, the time might be right to do a ginac 1.3.4 release. What do you think? Are there any reasons (aka bug->patch) to delay that release further? The NEWS file will contain the following items then: * More general index dimensions are now possible. * Improved algebraic substitutions. * Fixed bug in function bernoulli. * Fixed wrong matching in .has(). * Fixed bug in differentiation of a power. * collect_common_factors also works with negative powers of common factors now. * Code clean-up and preparations for upcoming cln 1.2. Hopefully nothing is missing. Regards, Jens