       continue
 
     console.debug("airbrake: can't parse", line)
+    backtrace.push({
+      function: '',
+      file: line,
+      line: 0,
+      column: 0,
+    })
 
   if backtrace.length == 0 and (e.fileName or e.lineNumber or e.columnNumber)
     backtrace.push({

      else
        column = 0
      backtrace.push({
        function: m[1]
        file: m[2]
        line: parseInt(m[3], 10)
        column: column
      })
      continue


# Chrome.
funcAliasFileLineColumnRe = /// ^
  \s{4}at\s
  (.+)\s          # function
  \[as\s(\S+)\]\s # alias
  \(
    (?:
      (?:
        (.+):     # file
        (\d+):    # line
        (\d+)     # column
      )|native
    )
  \)
$ ///

# Chrome.
funcFileLineColumnRe = /// ^
  \s{4}at\s
  (.+)\s       # function
  \(
    (?:
      (?:
        (.+):  # file
        (\d+): # line
        (\d+)  # column
      )|native
    )
  \)
$ ///

# Chrome.
