now passes pandoc errors back to you

lib/procedure.js

@@ -89,6 +89,24 @@ function getOutputFormat(formatVar, outputVar) {
   return getFileExtension(outputVar);
 }
 
+/*
+ * If Pandoc gives us an error warning, pass it on
+ * to the user.
+ */
+function catchWarning(err, stdout, stderr) {
+  if (stdout) {
+    console.log(stdout.replace(/^pandoc:\s/, 'jandoc: ').replace(/\n*$/, ''));
+  }
+
+  if (stderr) {
+    console.log(stderr.replace(/^pandoc:\s/, 'jandoc: ').replace(/\n*$/, '\njandoc: conversion was unsuccessful.'));
+  }
+
+  if (err) {
+    process.exit(1);
+  }
+}
+
 /*
  * Builds a Pandoc command line command.
  */
@@ -132,15 +150,15 @@ function runCommand(inputPath, outputPath, outputFormat, argString) {
            * Build the command and run it.
            */
           command = buildCommand(inputPath + '/' + files[i], outputPath + '/' + files[i], outputFormat, argString);
-          cmdLine(command, null);
+          cmdLine(command, catchWarning);
 
         /*
          * Otherwise, the input is a file and the output is a file.
          * Build the command and run it.
          */
         } else {
           command = buildCommand(inputPath + '/' + files[i], outputPath, outputFormat, argString);
-          cmdLine(command, null);
+          cmdLine(command, catchWarning);
         }
       }
     }
@@ -166,15 +184,15 @@ function runCommand(inputPath, outputPath, outputFormat, argString) {
        * Build the command and run it.
        */
       command = buildCommand(inputPath, outputPath + '/' + getFileName(inputPath), outputFormat, argString);
-      cmdLine(command, null);
+      cmdLine(command, catchWarning);
 
     /*
      * Otherwise, the input is a file and the output is a file.
      * Build the command and run it.
      */
     } else {
       command = buildCommand(inputPath, outputPath, outputFormat, argString);
-      cmdLine(command, null);
+      cmdLine(command, catchWarning);
     }
   }
 }