Re: Feature request: plain option for gsub
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- Subject: Re: Feature request: plain option for gsub
- From: Tom N Harris <telliamed@...>
- Date: 2014年8月22日 15:40:47 -0400
On Friday, August 22, 2014 09:31:19 AM Dirk Laurie wrote:
> Another con is that it would be a fifth parameter, preceded by one that
> is usually nil. No standard library routine in Lua 5.2 has that many
> non-vararg parameters.
Well it's usually 1, but...
Another pro would be that gsub can detect when there are no special characters
in the strings and take the plain shortcut. string.find does this.
And I forgot about the 'g' in gsub, so my Lua equivalent needs to be a loop.
local b = {}
local o,p,q = 1,s:find(this,1,plain)
while p do
b[#b+1] = s:sub(o,p-1)
o,p,q = q+1,s:find(this,q+1,plain)
end
b[#b+1] = s:sub(o)
return table.concat(b,that)
--
tom <telliamed@whoopdedo.org>