Option style for LuaTeX

[Norbert Preining]

Hi Bruno

On Wed, 20 Dec 2023, TeX Live Mailing List wrote:
> A quick question in case somebody here knows: does LuaTeX accept options in "single-dash style", like -file-line-error, or does it insist on "double-dash style", like --file-line-error?

Have you simply tried it?
At least on Linux,
	luatex --version
	luatex -version
	luatex --help
	luatex -help
and several others did work.

So yes, it does support both - and --

> uses getopt_long_only on line 366. Does this mean LuaTeX only accepts double-dash options?

>From the man page, eg here https://linux.die.net/man/3/getopt_long_only

> getopt_long_only() is like getopt_long(), but '-' as well as "--" can indicate a long option. If an option that starts with '-' (not "--") doesn't match a long option, but does match a short option, it is parsed as a short option instead.

Best regards

Norbert

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PREINING Norbert                              https://www.preining.info
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