Scite Lua - escaping right bracket in regex?
- by ~sd-imi
Hi all,
Bumped into a somewhat weird problem... I want to turn the string:
a\left(b_{d}\right)
into
a \left( b_{d} \right)
in Scite using a Lua script.
So, I made the following Lua script for Scite:
function SpaceTexEquations()
editor:BeginUndoAction()
local sel = editor:GetSelText()
local cln3 = string.gsub(sel, "\\left(", " \\left( ")
local cln4 = string.gsub(cln3, "\\right)", " \\right) ")
editor:ReplaceSel(cln4)
editor:EndUndoAction()
end
The cln3 line works fine, however, cln4 crashes with:
/home/user/sciteLuaFunctions.lua:49: invalid pattern capture
>Lua: error occurred while processing command
I think this is because bracket characters () are reserved characters in Lua; but then, how come the cln3 line works without escaping? By the way I also tried:
-- using backslash \ as escape char:
local cln4 = string.gsub(cln3, "\\right\)", " \\right) ") -- crashes all the same
-- using percentage sign % as escape chare
local cln4 = string.gsub(cln3, "\\right%)", " \\right) ") -- does not crash, but does not match either
Could anyone tell me what would be the correct way to do this?
Thanks,
Cheers!
