\D Non-digit character, [^0-9]. \
s Whitespace character, [\n\r\f\t ]. \
S Non-whitespace character, [^\n\r\f\t ]. Table 1-33. Anchors and zero-width tests Sequence Meaning ^ Start of string, or after any newline if in multiline match mode, /m. \A Start of search string, in all match mod[r]