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pyrepl: Cursor behaviour during tab-completion #119257
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@lysnikolaou I've taken the liberty of creating the issue for your observation in #118877, I hope that is okay.
I believe I have a fix for this in #118939, in case you want to take a look. Thanks!
I just hit this bug too, here's a recording (just before the cursor jumped, I pressed left arrow):
Pressing the Left arrow after the completions are shown moves the cursor three positions to the left.
It turns out
reader.pos2xyusesreader.screenandreader.screeninfoto compute the position in the screen. Both of these include the two lines with completions. However,reader.posandreader.bufferonly include the things actually typed by the user (i.e. the third linedatetime.). This leads to the new cursor position calculation being faulty. We'll have to think more about how to fix this.Originally posted by @lysnikolaou in #118877 (comment)