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The sourcing is meager. The feature was introduced by xterm in 2005, and adapted a few years later by some others (actually no one's bothered to make a well-sourced history, is a drawback when looking for reliable sources for a topic) TEDickey (talk) 15:49, 13 February 2022 (UTC)[reply]

(Original author here.) This page https://cirw.in/blog/bracketed-paste has some more information. And this link https://news.ycombinator.com/item?id=24797720, for example.

The feature is relatively recent, and most terminal emulators have it these days.

There is another important reason for paste bracketing that I didn't mention: without it, if a user (intentionally or not) pastes into a terminal emulator running a shell, from a clipboard which has newlines in it, the shell will immediately start executing the leading lines as commands (treating the newlines as enter key presses). — Preceding unsigned comment added by MishchenkoA (talk • contribs) 19:47, 13 February 2022 (UTC)[reply]

hmm "recent" apparently means 2005. For "most", your statement lacks a reliable source listing all of the terminal emulators currently in use (offhand, more than a hundred would be plausible) along with the notes for which have this particular feature. When you've provided that reliable source, others can discuss its suitability here TEDickey (talk) 20:43, 13 February 2022 (UTC)[reply]

By the way: writers on Wikipedia are not "authors", but are referred to as "editors" (though it appears that some view the task as creative writing) TEDickey (talk) 20:45, 13 February 2022 (UTC)[reply]