message: Honor insertSpaces in latexformatter
  This partly fixes as the tabsize is incorrectly detected.
diff: @@ -139,7 +139,7 @@ export class LaTexFormatter {
  .replace('%TMPFILE%', temporaryFile.split(path.sep).join('/'))
  .replace('%INDENT%', indent))
  - const worker = cp.spawn(this.formatter, args, { stdio: 'pipe', cwd: path.dirname(document.fileName) })
  + const worker = cp.spawn(this.formatter, args, { stdio: 'pipe', cwd: path.dirname(document.fileName), shell: true })
  // handle stdout/stderr
  const stdoutBuffer = [] as string[]
  const stderrBuffer = [] as string[]
  