The zsh/deltochar Module
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The zsh/deltochar module makes available two ZLE functions:
delete-to-char
Read a character from the keyboard, and delete from the cursor
position up to and including the next (or, with repeat count N,
the Nth) instance of that character. Negative repeat counts mean
delete backwards.
zap-to-char
This behaves like delete-to-char, except that the final occurrence
of the character itself is not deleted.