The Hardest Software Problem I have ever Solved
September 13, 2026
Sometimes it is only known in how many percent of the cases software fails, but not on which inputs.
September 13, 2026
Using Additional Spellings for C famousC and C++ Cplusplus in Job Openings
September 10, 2026
When I look for the terms C or C++ in job boards or public tenders, I often do not find what I search for.
How to Control Smart Switches for an Off-Grid System to get the Maximum Energy from a PV inverter?
September 8, 2026
This article discusses theoretical ways to get the maximum energy from a PV inverter by dynamically turning loads on and off, and shows how to practically automate the process in openHAB. The herein presented program logic keeps smart switches relaying electricity as long as there is energy surplus, and also allows manual intervention.
Why option `-s` for `git commit` makes no sense
August 8, 2026
In practice the Sign-Off-By: text in commit messages is always used to transfer copyrights. The “right to submit” does not exist, as long as there are no consequences when the right is violated. OSS projects should keep a list of proposed changes, whose only problem is the lack of Sign-off-by line.
Generate Statistics about Listserv Mailing Lists
July 3, 2025
How to visualise the dynamics of number of subscribers and postings per year and mailing list? At AEGEE this is done at https://mail.aegee.org/stats.html .
How looks the Confidential and Private part of an offer to an employee from Broadcom
April 11, 2025
This is the wording I received in an offer from Broadcom for a permanent position. After the citation I insert my comments.
Collecting increased transit fees for transport of Russian gas by Bulgaria and Poland and donating the win to Ukraine is a valiant act
February 14, 2025
Collecting high fees for transit of Russian gas by Bulgaria and Poland and donating the excessive win as help to Ukraine will accelerate the end of the war.
Handling Spam is forced, involuntarily, unpaid Work (stolen time)
February 2, 2025
The involuntary handling of spam, is unpaid work. Likewise for advertisements inserted in the mailbox of the living house and unsolicited telephone advertisements. To solve the problem this work must be paid. Currently it is not paid, as there is no proof that human life has value.
Cyrus IMAP Support
October 25, 2024
I offer paid support for Cyrus IMAP: troubleshooting, installation assistance, new features. I have many contributions to its source code, so I know how and where to resolve problems. If the support use case can be of use for others, I will propose upstream adjustments to the documentation or the source code.
./configure ‑‑help : ‑‑enable-feature or ‑‑disable-feature?
October 16, 2024
By default a feature can be enabled, disabled, when ./configure is run, or its value may depend on the environment. Should ./configure ‑‑help print for it ‑‑enable-feature or ‑‑disable-feature?