I need something in document like this
\listcallingmodes
which return the list of calling modes, that is, if I run
context --mode=mode1,mode2 file.tex
in file.tex:
\starttext
\startmode[a1]
This is mode a1
\stopmode
Hello
\listcallingmodes
\stoptext
which I would to get
Hellp
mode1 mode2
Note that in this file we could have other modes than calling modes
NEW ANSWER:
If you only need those modes called via the command line, this task is easier. Since ConTeXt stores command line data in the environment namespace, let's take advantage of this:
\startluacode
local listofcalledmodes = function()
local split = string.split
local flag = '^--c:mode='
local concat = table.concat
for _, v in pairs(environment.originalarguments) do
if v:find(flag) then
local w = split(v:gsub(flag, ""), ",")
context(concat(w, " "))
return
end
end
context("No modes set")
end
interfaces.implement{
name = "listofcalledmodes",
public = true,
actions = listofcalledmodes
}
\stopluacode
\starttext
\startTEXpage
My list of modes: \listofcalledmodes
\stopTEXpage
\stoptext
Compiling your file the following way (159.tex is my file):
context --mode=amode,anothermode,toomanymodes 159.tex
I get the following result:
OLD ANSWER:
I'll ask for a feature request to the mailing list so a proper macro is available. In the meantime, the following should do the work most of times. Since modes are registered at the TeX end with as command sequences named with a mode> prefix (in core-env.mkiv and core-env.mkxl), we can look up at them in tex.hashtokens (related discussion here). However, if I get you right, you don't want system modes (internal, marked with an asterisk), so they will be filtered out:
\startluacode
local function listofmodes()
local s1, s2 = "^mode>[^%*]+", "^mode>"
context.blank() -- change this ad libitum
for _, v in pairs(tex.hashtokens()) do
if v:find(s1) and tex.modes[v:gsub(s2, "")] then
context(v:gsub(s2, ""))
context.par() -- also change this if needed
end
end
end
interfaces.implement{
name = "listofmodes",
public = true,
actions = listofmodes
}
\stopluacode
\starttext
Hi, there's a list of used modes: \listofmodes
\stoptext
However, you may need a workaround, setting hash_extra=0 in some cases (issue discussed here), so you're warned.
mkiv in my document and I run context --mode=espa1,espa1a,espa2,espa2a,espa3,espa3a,espa4,espa4a --nonstopmode --noconsole --purgeall myfile.conTeXt
\startluacode local function listofmodes() local s1, s2 = "^mode>[^%*]+", "^mode>" context.blank() -- change this ad libitum for _, v in pairs(tex.hashtokens()) do if v:find(s1) and tex.modes[v:gsub(s2, "")] then context(v:gsub(s2, "")) end end end interfaces.implement{ name = "listofmodes", public = true, actions = listofmodes } \stopluacode \starttext \startmode[a1] Això és a1 \stopmode Jols \stoptext
par (or context.par() in the Lua side) on purpose. You only need to remove it and change goto done by return. I'll edit my answer