$ uniprops 0x0B U+000B ‹U+000B› \N{LINE TABULATION} \v \R \pC \p{Cc} All Any ASCII Assigned Basic_Latin C Other Cc Cntrl Common Zyyy Control Pat_WS Pattern_White_Space PatWS POSIX_Cntrl POSIX_Space Space VertSpace White_Space WSpace X_POSIX_Cntrl X_POSIX_Space $ perl -E'say "\x0B" =~ /\p{Space}/ ?1:0;' 1 $ perl -E'say "\x0B" =~ /\s/ ?1:0;' 1