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

Pablo Rodriguez schrieb am 13.10.2020 um 17:33:

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{...}{...}?

There is no need because everything is stored in a Lua table. %%%% begin example \starttext \startluacode local argumentlist  = document.arguments.arguments local argumenttable = utilities.parsers.settings_to_hash(argumentlist) context(argumenttable["fname"]) \stopluacode \stoptext %%%% end example I tested the example with:     context --arguments="fname=abc123" <filename> Wolfgang

On 10/13/20 5:33 PM, Pablo Rodriguez wrote:

[...] \starttext \ctxlua{ d = [[\env{fname}]] }

d: \cldcontext{d}\\ \doifelse{\cldcontext{d:match("\letterpercent d+")}} {123}{yes}{no} \stoptext [...] 3. I’m trying this on a Linux box, but on Windows I would say that Lua variable "d" is empty.

Just for the record, this sample also works in Windows. The Lua variable isn’t empty and the conditional outputs "yes". Pablo -- http://www.ousia.tk