Check result of ParseForWords.

vartree2.sh in the ast/.../ksh93 repo hit this.
oilshell · Oct 18, 2017 · cb7c3015261befb5d2c095943011e14178721b22 · cb7c301
1 parent d52e4a4
commit cb7c3015261befb5d2c095943011e14178721b22
Unified Split

Showing with 4 additions and 1 deletion.

+4 −1 osh/cmd_parse.py
diff --git a/osh/cmd_parse.py b/osh/cmd_parse.py
@@ -782,7 +782,10 @@ def _ParseForEachLoop(self):
      self._Next()  # skip in

      in_spid = word.LeftMostSpanForWord(self.cur_word) + 1
-      iter_words, semi_spid = self.ParseForWords()
+      x = self.ParseForWords()
+      if x is None:
+        return None
+      iter_words, semi_spid = x
      words2 = braces.BraceDetectAll(iter_words)
      words3 = word.TildeDetectAll(words2)