One of the features most obviously missing in LibreOffice Writer (or opaque to this user, at least) is the capacity to use a wildcard in auto-correct entries. For instance, if I attempt to set up an auto-correct entry to take three periods and change to an ellipsis (which is a standard typographical convention), it is not possible to type “[wildcard]…” and have the software do the auto-correct, as there is no wildcard. In auto-correct, there needs to be a space typed before the “…” for things to work, which issues in text that is just not proper typography. This is frustrating for a writer.
There are similar problems with convincing the software to perform an auto-correct on analogous text, e.g., try to set up an auto-correct to change “–” to an em dash at the end of a word, or between two words, and the auto-correct feature just will not work: a space has to be typed before the text, which is actually not the proper typographical convention.
This, it seems to me, would be most easily fixed by the simple expedient of having a wildcard available in the auto-correct feature. As it is, the auto-correct feature in Writer is simply unsatisfactory.