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javapandocprocessbuilder

pandoc.exe: Unknown writer: markdown (when called from Java)

I put pandoc on a Windows network drive. The following call succeeds in the command line:

P:\Maven\pandoc\pandoc-1.19.2.1-windows\pandoc.exe -t markdown C:\devel\ContiMars2\workspace\compareABM\docs\release-notes-utf8.html

but when starting it from Java using ProcessBuilder, 

List<String> command = new ArrayList<>();
command.add("P:\\Maven\\pandoc\\pandoc-1.19.2.1-windows\\pandoc.exe");
command.add("-t markdown");
command.add("C:\devel\ContiMars2\workspace\compareABM\docs\release-notes-utf8.html");
ProcessBuilder pb = new ProcessBuilder(command);

I get:

pandoc.exe: Unknown writer:  markdown

Any idea why?

Solution

  • This is just the usual problem with spaces in commands that are given to ProcessBuilder. If you write --to=markdown instead of -t markdown, everything is fine.