In trying to NOT have my quotation marks and parentheses auto-close, I discovered that both the preferences and the plugins have auto-close options. If you have both auto-close options on for paretheses, square brackets, and brackets, it still only produces one complementary character. However, if you have both auto-close options on for quotation marks, single or double, it produces a second complementary character, making three in total (that is, """). This doesn't make sense. I'm using Geany 1.36. I checked the release notes of all the versions after that up to 1.8 and there has been no reported fix for this problem, so I assume it hasn't been noticed.