On 5/28/2024 6:25 PM, Tomáš Hála wrote:
Hi Pablo,
unfortunately, that it is not possible:
http://lua-users.org/wiki/PatternsTutorial, section Limitations.
\starttext
\startTEXpage[pagestate=start, offset=1em]
\startluacode
local pat = (lpeg.Cmt(lpeg.P("this") + lpeg.P("that"),
function(str,_,s)
context(s)
return #str
end) + lpeg.P(1))^1
lpeg.match(pat,"how about this being that")
local pat = (lpeg.Cmt(lpeg.oneof({ "this", "that" }),
function(str,_,s)
context(s)
return #str
end) + lpeg.P(1))^1
lpeg.match(pat,"how about this being that")
\stopluacode
\stopTEXpage
\stoptext
On Tue, May 28, 2024 at 06:12:51PM +0200, Pablo Rodriguez via ntg-context wrote:
Dear list,
I have the following sample:
\starttext
\startTEXpage[pagestate=start, offset=1em]
\startluacode
local str = "this is that"
context(str:match("(this|these)"))
\stopluacode
\stopTEXpage
\stoptext
In short, I would like to know whether it is possible to have the
regular expression (this|these) as a Lua pattern.
I mean, I need complete strings and I haven’t found the way to do it.
Many thanks for your help,
Pablo
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