https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=21665

Phil Ringnalda <[email protected]> changed:

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--- Comment #20 from Phil Ringnalda <[email protected]> ---
It looks like the intent of this patch got lost over time.

It wasn't trying to fix what happens when you press Ctrl+C, or when you
right-click and select Copy. What it did was use the now-deprecated
execCommand("copy") to immediately copy the entire contents of whatever
subfield contains the double-click-selected word after you double-click.

You can still see that working in current Chrome: double-click within the
number of an ISBN, then without doing anything to try to copy, just go over to
the search inputs on the left and paste into one. In Chrome, you'll paste that
ISBN without an a in front of it. But in current Firefox, you'll paste whatever
was already in your clipboard, because it doesn't copy in Firefox.

But then to see why silently copying the whole subfield is a bad idea, imitate
having a record with multiple misspellings of a word that you want to fix by
copying the correctly spelled word and pasting it over the misspelling:

1. Copy the word misspelled
2. In the advanced editor, in Chrome, with this patch applied, in any
convenient field like 245$a, type The mispelled word.
3. Double-click mispelled and press Ctrl-V

Oopsie! Instead of pasting misspelled which you thought was in your clipboard,
you pasted The mispelled word, because double-clicking just one word copied the
whole subfield contents, overwriting your clipboard.

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