Incremental Update: Add psql tab completion support for FOR PORTION OF
Summary
No substantive technical progress since the last analysis. The only new message is from Kiran (the patch author) acknowledging Peter Eisentraut's commit and indicating intent to submit follow-up work "early next week" to address additional scenarios — likely including the non-working terminal keyword completion rule that was dropped before commit. No patch, no technical details about what those scenarios are, and no other participants have weighed in.