"'RParen' expected": LuaParseException from valid lua file

[Emik03]

using Lua;
LuaState.Create().DoFileAsync("plugin.lua");

where plugin.lua is this

[CodeSmile-0000011110110111]

Could you please provide a line number, and include the offending line? That script is several hundred lines long and won't run by itself due to external references. But nice to see this is Unity stuff. :)

It would help to narrow it down, possibly to the same "RParen expected" issue I just found in 0.4.2:

local b = (-1 + 1)
print("b", b)

The culprit is the negation: -1
I can work around by enclosing (-1) in parenthesis.

[Emik03]

The exception is

Lua.LuaParseException: plugin.lua:(1519,53): 'RParen' expected  

which refers to

return c * 1.001 * (-pow(2, -10 * t / d) + 1) + b

As you have correctly predicted, wrapping every instance of -x with (-x) fixes those errors.
However, I also encountered another edgecase from the same large lua file:

"return " ..
x:gsub("$t", t)
:gsub("$b", b)
:gsub("$c", c)
:gsub("$d", d)
:gsub("$v", v)

This also causes the same "'RParen' expected" error, and can be sidestepped by not wrapping chained calls:

"return " ..
x:gsub("$t", t):gsub("$b", b):gsub("$c", c):gsub("$d", d):gsub("$v", v)

This now gives the correct output of Lua.LuaRuntimeException: plugin.lua:57: attempt to call a 'Nil' value (it's correct because I indeed haven't specified read() from line 57).

Also as an addendum, this isn't actually within a Unity project, but a MonoGame project instead. It's a plugin for the video game Quaver and I'm experimenting with potentially moving away from MoonSharp (which has proved to be very slow).

[nuskey8]

fixed in #176