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Stefan Monnier authored
(regexp-opt): Update comment and adapt the code the new meaning of the `paren' argument of regex-opt-group for shy-groups. (regexp-opt-depth): Handle shy groups as well as backslashed backslashes. (regexp-opt-group): Turn the leading comment into a docstring. Allow `paren' to be a string (the string to use to open a group). Remove open-presuf and close-presuf. Instead of checking for `all one-char' and then later on check for `several one-char', handle both cases close together. Also apply a more generic algorithm for suffixes (the mirror image of the algorithm used for prefixes). Use shy-groups. \Use nreverse rather than reverse. (regexp-opt-try-suffix): Removed.
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