1 2e= q='?' a='*' t=texttext s='ast*que?non' p='/et[c]/' w='a b c' b='{{(#)}}' 3h='##' 4failures='' 5ok='' 6 7testcase() { 8 code="$1" 9 expected="$2" 10 oIFS="$IFS" 11 eval "$code" 12 IFS='|' 13 result="$#|$*" 14 IFS="$oIFS" 15 if [ "x$result" = "x$expected" ]; then 16 ok=x$ok 17 else 18 failures=x$failures 19 echo "For $code, expected $expected actual $result" 20 fi 21} 22 23# We follow original ash behaviour for quoted ${var+-=?} expansions: 24# a double-quote in one switches back to unquoted state. 25# This allows expanding a variable as a single word if it is set 26# and substituting multiple words otherwise. 27# It is also close to the Bourne and Korn shells. 28# POSIX leaves this undefined, and various other shells treat 29# such double-quotes as introducing a second level of quoting 30# which does not do much except quoting close braces. 31 32testcase 'set -- "${p+"/et[c]/"}"' '1|/etc/' 33testcase 'set -- "${p-"/et[c]/"}"' '1|/et[c]/' 34testcase 'set -- "${p+"$p"}"' '1|/etc/' 35testcase 'set -- "${p-"$p"}"' '1|/et[c]/' 36testcase 'set -- "${p+"""/et[c]/"}"' '1|/etc/' 37testcase 'set -- "${p-"""/et[c]/"}"' '1|/et[c]/' 38testcase 'set -- "${p+"""$p"}"' '1|/etc/' 39testcase 'set -- "${p-"""$p"}"' '1|/et[c]/' 40testcase 'set -- "${p+"\@"}"' '1|@' 41testcase 'set -- "${p+"'\''/et[c]/'\''"}"' '1|/et[c]/' 42 43test "x$failures" = x 44