Verify that \n \nn and \nnn are accepted for octal escapes.

core/word_compile.py

@@ -42,18 +42,12 @@ def EvalCStringToken(id_, value):
  elif id_ == Id.Char_Stop:  # \c returns a special sentinel
    return None

  elif id_ == Id.Char_Octal3:  # $'\377'
    s = value[1:]
    i = int(s, 8)
    if i >= 256:
      i = i % 256
      # NOTE: This is for strict mode
      #raise AssertionError('Out of range')
    return chr(i)
  elif id_ in (Id.Char_Octal3, Id.Char_Octal4):
    if id_ == Id.Char_Octal3:  # $'\377'
      s = value[1:]
    else:                      # echo -e '\0377'
      s = value[2:]

  elif id_ == Id.Char_Octal4:  # \0377 for echo -e
    # TODO: Error checking for \0777
    s = value[2:]
    i = int(s, 8)
    if i >= 256:
      i = i % 256

gold/dollar-sq.sh

@@ -33,6 +33,8 @@ echo $'abcd\u006' | od -A n -c | sed 's/ \+/ /g'
echo $'\u6' | od -A n -c | sed 's/ \+/ /g'
#echo $'\0' '\1' '\8' | od -A n -c | sed 's/ \+/ /g'

echo $'\1 \11 \11 \111' | od -A n -c | sed 's/ \+/ /g'

echo $'foo
bar'

spec/quote.test.sh

@@ -158,6 +158,15 @@ echo -n $'\001' $'\377' | od -A n -c | sed 's/ \+/ /g'
 001 0O7
## END

### $'' octal escapes with fewer than 3 chars
echo $'\1 \11 \11 \111' | od -A n -c | sed 's/ \+/ /g'
## STDOUT:
 001 \t \t I \n
## END
## N-I dash STDOUT:
 $ 001 \t \t I \n
## END

### $""
echo $"foo"
# stdout: foo