On Tue, 13 Oct 2020, Pablo Rodriguez wrote:
Dear list,
I have the following sample:
\starttext \def\numbersfname {\cldcontext{string.match([[\env{fname}]], "\letterpercent d+")}} \ctxlua{ c = context.getvariable("environment", "fname") or "a" } \ctxlua{ d = [[\env{fname}]] }
tex: \numbersfname\\ \doifelse{} {123}{yes}{no}\\ c: \cldcontext{c}\\ \doifelse{\cldcontext{c:match("\letterpercent d+")}} {123}{yes}{no}\\ d: \cldcontext{d}\\ \doifelse{\cldcontext{d:match("\letterpercent d+")}} {123}{yes}{no} \stoptext
For compilation, I run the command:
context --purgeall --arguments=fname={abc123} test-file.tex
These things are failing:
1. I don’t know how to get \numbersfname equal to "123". I don’t know what I’m doing wrong.
2. Is there no Lua version of \getvariable{...}{...}?
3. I’m trying this on a Linux box, but on Windows I would say that Lua variable "d" is empty.
I need to get the number from \env{fname} and I don’t know what I’m missing. \doif is the way to test whether it’s right.
Could anyone explain me what I’m missing here?
I find it simpler to write macros where there is clean communicating between tex and lua. For example: \startluacode userdata = userdata or {} function userdata.numbersfname(name) return string.match(name, "%d+") end \stopluacode \define[1]\numbersfname {\cldcontext{userdata.numbersfname([==[#1]==])}} \starttext \numbersfname{abc123} \numbersfname{\env{fname}} \stoptext Aditya