LERewriteRule from-pattern to-pattern [flags]

This directive defines a search-and-replace edit rule that will be applied to the text.

• The search string from-pattern may be a literal string or a regular expression.
• The replacement string to-pattern may be a literal string, or may include backreferences $1-$9 in the case of a regular expression match.
• The optional Flags argument may contain any combination of:
  • R - This rule is a regular expression search-and-replace.
  • i - Use case-insensitive matching on from-pattern.
  • m - Support multi-line regexp matching (in conjunction with the R flag and LELineEnd None).
  • V - Support environment variables in to-pattern. The string ${var} will be replaced with the value of the environment variable var.