+++ /dev/null
-# ./tr a '[c*]b'
-# ./tr -s abc zy
-# ./tr abc zy
-tr a '[:not-a-class:]' < /dev/null
-tr a '[:digit:]' < /dev/null
-tr '[c*]' k < /dev/null
-tr a '[=c=]' < /dev/null
-tr a '[c*][c*]' < /dev/null
-tr -ds abd '[c*]' < /dev/null
-tr -c '[:lower:]' '[:upper:]' < /dev/null
-tr '[:lower:]' '[:lower:]' < /dev/null
-tr '0-9[:lower:]' '[:upper:]' < /dev/null
-tr a '' < /dev/null
-tr -s '\432' < /dev/null
-tr a 'abc\' < /dev/null
-tr a '\x' < /dev/null
-tr -s < /dev/null
-
-# And make sure tr does the right thing when POSIXLY_... is set.
+++ /dev/null
-[]*] # What about this?! valid
-[:*096] # invalid: 096 isn't a valid octal number
-a [:*0] # as many colons as string1 was long (not to be confused
- # with a character class)
-[:*] # ditto
-[:*016] # 14 colons
-[=]=] # valid: equivalence class containing ']'
-[-a # valid, assuming `[' is before 'a' in collating sequence
- -] # valid, assuming ` ' is before ']' in collating sequence
---] # valid, assuming `-' is before ']' in collating sequence
-\0-\377 # valid
-[\0-\377]# valid, (but brackets will be mapped to corresponding chars
- # in other string)
-abcde[:* # valid, but none of the characters is considered special
-abc xyzdef # Should this (str2 longer than str1) evoke a warning?
- # Probably so if we're only translating, but if also deleting or
- # squeezing this makes sense.
-abcdef : # Map abcdef all to `:', as if str2 had been [:*]