message: Add a log message for TEMP, TMP, and TMPDIR.
diff: @@ -31,6 +31,7 @@ export class Builder {
  this.tmpDir = tmp.dirSync({unsafeCleanup: true}).name.split(path.sep).join('/')
  } catch (e) {
  vscode.window.showErrorMessage('Error during making tmpdir to build TeX files. Please check the environment variables, TEMP, TMP, and TMPDIR on your system.')
  + console.log(`TEMP, TMP, and TMPDIR: ${JSON.stringify([process.env.TEMP, process.env.TMP, process.env.TMPDIR])}`)
  throw e
  }
  this.buildMutex = new Mutex()
  