Re: [NTG-context] problem with lua io.lines

14 Aug 2013

      Am 2013-08-14 um 20:15 schrieb Wolfgang Schuster :
...
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Current beta MkIV seems to have a bug in the Lua function io.lines:
for myline in io.lines(myfile) do
logs.report(myline)
end
"myfile" just contains one line with a number, without return/newline.
If the number has more than one digit, I get single digits as "myeline".
Do you have a minimal working example?
Minimal working yes, but not minimal failing ;-)

This works:

io.output(io.open("myfile.txt","w"))
io.write("123")
io.close()

for myline in io.lines("myfile.txt") do
  print(myline .. "\n")
end

But in my t-lilyfilter.tex where it reads the systems.count files of LilyPond (that contain only the number of note systems that resulted from the included LilyPond code), it fails:

 function thirddata.parselilypondfile(name)
   -- include all systems (note lines)
   -- name is like \LILYTEMP/mainfile-temp-lilypond-21.pdf
   logs.report("LILYPOND","name='" .. name .. "'")
   syco = 0
   for ts in io.lines(string.gsub(name, '%.pdf$', '-systems.count')) do
     syco = ts*1
   end

   for nr = 1, syco do
     logs.report("LILYPOND","including system no." .. nr)
     context("\\externalfigure[" .. string.gsub(name, '%.pdf$', '-' .. nr) .. "]")
   end
 end

While I have a single-digit number of systems, it works, but the song of my failing case has 11 lines.

I wouldn't complain if it wouldn't have worked before!

Greetlings, Hraban

Re: [NTG-context] problem with lua io.lines

Henning Hraban Ramm