tests/exp5.sub

   1 # expansions involving patterns
   2 var='[hello'
   3 echo "${var//[/}"
   4
   5 red='\[\e[0;31m\]'
   6 printf "%s\n" "${red//\\[\\e/}"
   7
   8 foo="${red//\\[\\e/}"
   9
  10 # foo == [0;31m\]
  11 printf "%s\n" "${foo//[0;31m\\/}"
  12
  13 echo "${var//[]/}"
  14 echo "${red//[]/}"
  15
  16 v=hello
  17 foo='[:alpha:]'
  18
  19 echo ${v//[[:alpha:]]/}
  20 echo ${v//[[:alpha]]/}
  21 echo ${v//[[:alpha]/}