A03quoting.ztst   [plain text]


%test
  print 'single  quotes'  "double  quotes"  `echo backquotes`
0:Simple use of quotes
>single  quotes double  quotes backquotes

  foo=text
  print -r '$foo\\\' "$foo\$foo\\\"\``echo bar`\`\"" `print -r $foo\\\``
0:Quoting inside quotes
>$foo\\\ text$foo\"`bar`" text`

  print -r $'\'ut queant laxis\'\n"resonare fibris"'
0:$'-style quotes
>'ut queant laxis'
>"resonare fibris"

  print -r $'\'a \\\' is \'a backslash\' is \'a \\\''
0:$'-style quotes with backslashed backslashes
>'a \' is 'a backslash' is 'a \'

  chars=$(print -r $'BS\\MBS\M-\\')
  for (( i = 1; i <= $#chars; i++ )); do
    char=$chars[$i]
    print $(( [#16] #char ))
  done
0:$'-style quote with metafied backslash
>16#42
>16#53
>16#5C
>16#4D
>16#42
>16#53
>16#DC

  print -r ''''
  setopt rcquotes
# We need to set rcquotes here for the next example since it is
# needed while parsing.
0:No RC_QUOTES with single quotes
>

  print -r ''''
  unsetopt rcquotes
0:Yes RC_QUOTES with single quotes
>'
# ' Deconfuse Emacs quoting rules

  print '<\u0041>'
  printf '%s\n' $'<\u0042>'
  print '<\u0043>'
  printf '%s\n' $'<\u0044>'
0:\u in both print and printf
><A>
><B>
><C>
><D>

  null1="$(print -r a$'b\0c'd)"
  null2="$(setopt posixstrings; print -r a$'b\0c'd)"
  for string in $null1 $null2; do
    print ":"
    for (( i = 1; i <= $#string; i++ )); do
      char=$string[$i]
      print $(( [#16] #char ))
    done
  done
0:Embedded null characters in $'...' strings.
>:
>16#61
>16#62
>16#0
>16#63
>16#64
>:
>16#61
>16#62
>16#64