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Add relative numbers for commands by prepending ~ (#9588)

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* Add relative numbers for commands by prepending ~

* Some builtin code cleanup

* Disallow nan and inf in minetest.string_to_area

* Remove unused local variable teleportee (makes Luacheck happy)

* Clean up core.string_to_pos

* Make area parsing less permissive

* Rewrite tests as busted tests

* /time: Fix negative minutes not working

Co-authored-by: Lars Mueller <appgurulars@gmx.de>
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Wuzzy 2022-05-22 14:28:24 +00:00 • committed by GitHub
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10
doc/lua_api.txt
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@ -3550,8 +3550,16 @@ Helper functions
* `minetest.string_to_pos(string)`: returns a position or `nil`
* Same but in reverse.
* If the string can't be parsed to a position, nothing is returned.
* `minetest.string_to_area("(X1, Y1, Z1) (X2, Y2, Z2)")`: returns two positions
* `minetest.string_to_area("(X1, Y1, Z1) (X2, Y2, Z2)", relative_to)`:
* returns two positions
* Converts a string representing an area box into two positions
* X1, Y1, ... Z2 are coordinates
* `relative_to`: Optional. If set to a position, each coordinate
can use the tilde notation for relative positions
* Tilde notation: "~": Relative coordinate
"~<number>": Relative coordinate plus <number>
* Example: `minetest.string_to_area("(1,2,3) (~5,~-5,~)", {x=10,y=10,z=10})`
returns `{x=1,y=2,z=3}, {x=15,y=5,z=10}`
* `minetest.formspec_escape(string)`: returns a string
* escapes the characters "[", "]", "\", "," and ";", which can not be used
in formspecs.