Looks like v18 has grown a few appendStringInfo misusages, e.g. using appendStringInfo() when no formatting is needed or just using format "%s" instead of using appendStringInfoString().
I've attached a couple of patches. The 0001 is just my method for finding these, not for commit. 0002 contains the fixes to commit. Any objections to doing this soonish? Or in a few weeks? David
v1-0001-Adjust-code-to-highlight-appendStringInfo-misusag.patch
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v1-0002-Improve-various-appendStringInfo-calls-that-are-n.patch
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