[luatex] About lua 5.2 changes
taco at elvenkind.com
Wed Jan 9 10:37:23 CET 2013
On 01/04/2013 05:20 PM, Herbert Voss wrote:
> that will be fine for LuaTeX or Context users, but LuaLaTeX
> users will run into problems ...
This just came up on tlcontrib, but is important to post here
as well: there are a few language changes on Lua 5.2 compared
to 5.1. There is a list here:
But also, the string parser has changed:
Lua 5.1 understands the following backslash escapes:
\a \b \f \n \r \t \v \\ \' \"
(these all have their expected C meanings)
\<LF> (insert a line feed into the string)
\<CR> (internally converted to <LF>, then inserted)
\<d[dd]> (1-3 decimal digits, result range is 0-255)
Lua 5.2 adds:
\z (skips following whitespace in input)
\x<xx> (2 case-insensitive hex digits)
Anything else following a backslash is an error in Lua 5.2,
but was silently ignored in 5.1.
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