My name is Camiel Plevier.
At Dutch Space, Leiden, the Netherlands, in 2005 I worked on a test program for the Herschel and Planck satellite's attitude control system. The test scripts needed to be written in TCL 8.3. Several times the discussions on these pages helped me to work around the unnatural quirks of TCL. So I felt I had to contribute as well.
RS: Welcome! But could you elaborate on what "unnatural quirks" you mean?
What someone regards as "unnatural quirks" is relative to his background and viewpoint. Any examples given by one person will be debated by others. My contributions to several pages should give a clue on my particular vantage point.
OK... One example: expr 1<<31 (TCL 8.4 and older)