Deprecate callable regex objects

Author: ararslan

base/deprecated.jl

@@ -1452,6 +1452,8 @@ end
            link_pipe!(pipe, reader_supports_async = julia_only_read, writer_supports_async = julia_only_write),
            false)
 
+@deprecate (r::Regex)(s) isfound(r, s)
+
 # PR 26156
 @deprecate trunc(x, digits, base) trunc(x, digits, base = base)
 @deprecate floor(x, digits, base) floor(x, digits, base = base)

base/regex.jl

@@ -153,8 +153,6 @@ function contains(s::SubString, r::Regex, offset::Integer=0)
                      r.match_data)
 end
 
-(r::Regex)(s) = contains(s, r)
-
 """
     match(r::Regex, s::AbstractString[, idx::Integer[, addopts]])