Fix pasteRulesPlugin always adding one extra character to text range #2968
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This is a fix for #2939
PasteRule's appendTransaction plugin method looks for a changed range by comparing the before/after state using
findDiffStart
andfindDiffEnd
.The range is passed to
state.doc.nodesBetween
and thennode.textBetween
. findDiffStart/end appear to handle node positions differently.This is already accounted for in the
from
argument (usingMath.max(from - 1, 0)
), but there was no such offset forto
, so all paste rules receive one extra character at the end, unless the content was pasted at the end of a node (so this also can't be solved in userspace easily).