code: function findFullSourceLine(fileLines, startLine) {
          var lines = []
          var parenCount = 0
          var mode = 0 // mode 0 for paren searching, mode 1 for double-quote searching, mode 2 for single-quote searching
          var lastWasBackslash = false // used for quote searching
          for(var n=startLine; n<fileLines.length; n++) {
              var line = fileLines[n]
              lines.push(line.trim())
  
              for(var i=0; i<line.length; i++) {
                  var c = line[i]
  
                  if(mode === 0) {
                      if(c === '(') {
                          parenCount++
                          //if(parenCount === 0) {
                            //  return lines.join('\n') // done
                          //}
                      } else if(c === ')' && parenCount > 0) {
                          parenCount--
                          if(parenCount === 0) {
                              return lines.join('\n') // done
                          }
                      } else if(c === '"') {
                          mode = 1
                      } else if(c === "'") {
                          mode = 2
                      }
                  } else if(mode === 1) {
                      if(c === '"' && !lastWasBackslash) {
                          mode = 0
                      }
  
                      lastWasBackslash = c==='\\'
                  } else { // mode === 2
                      if(c === "'" && !lastWasBackslash) {
                          mode = 0
                      }
  
                      lastWasBackslash = c==='\\'
                  }
              }
          }
  
          return lines.join('\n') // if it gets here, something minor went wrong
      }
docs: attempts to find the full function call expression (over multiple lines) given the sources lines and a starting point