MEOL EOL, no Same, assuming multiline.
SEOL EOL, no Same, assuming singleline.
BOUND BOUND, no Match "" at any word boundary
-BOUNDUTF8 BOUND, no Match "" at any word boundary
BOUNDL BOUND, no Match "" at any word boundary
-BOUNDLUTF8 BOUND, no Match "" at any word boundary
NBOUND NBOUND, no Match "" at any word non-boundary
-NBOUNDUTF8 NBOUND, no Match "" at any word non-boundary
NBOUNDL NBOUND, no Match "" at any word non-boundary
-NBOUNDLUTF8 NBOUND, no Match "" at any word non-boundary
GPOS GPOS, no Matches where last m//g left off.
# [Special] alternatives
REG_ANY REG_ANY, no Match any one character (except newline).
-ANYUTF8 REG_ANY, no Match any one Unicode character (except newline).
SANY REG_ANY, no Match any one character.
-SANYUTF8 REG_ANY, no Match any one Unicode character.
ANYOF ANYOF, sv Match character in (or not in) this class.
-ANYOFUTF8 ANYOF, sv 1 Match character in (or not in) this class.
ALNUM ALNUM, no Match any alphanumeric character
-ALNUMUTF8 ALNUM, no Match any alphanumeric character
ALNUML ALNUM, no Match any alphanumeric char in locale
-ALNUMLUTF8 ALNUM, no Match any alphanumeric char in locale
NALNUM NALNUM, no Match any non-alphanumeric character
-NALNUMUTF8 NALNUM, no Match any non-alphanumeric character
NALNUML NALNUM, no Match any non-alphanumeric char in locale
-NALNUMLUTF8 NALNUM, no Match any non-alphanumeric char in locale
SPACE SPACE, no Match any whitespace character
-SPACEUTF8 SPACE, no Match any whitespace character
SPACEL SPACE, no Match any whitespace char in locale
-SPACELUTF8 SPACE, no Match any whitespace char in locale
NSPACE NSPACE, no Match any non-whitespace character
-NSPACEUTF8 NSPACE, no Match any non-whitespace character
NSPACEL NSPACE, no Match any non-whitespace char in locale
-NSPACELUTF8 NSPACE, no Match any non-whitespace char in locale
DIGIT DIGIT, no Match any numeric character
-DIGITUTF8 DIGIT, no Match any numeric character
DIGITL DIGIT, no Match any numeric character in locale
-DIGITLUTF8 DIGIT, no Match any numeric character in locale
NDIGIT NDIGIT, no Match any non-numeric character
-NDIGITUTF8 NDIGIT, no Match any non-numeric character
NDIGITL NDIGIT, no Match any non-numeric character in locale
-NDIGITLUTF8 NDIGIT, no Match any non-numeric character in locale
-ALNUMC ALNUMC, no Match any alphanumeric character
-ALNUMCUTF8 ALNUMC, no Match any alphanumeric character
-ALNUMCL ALNUMC, no Match any alphanumeric character in locale
-ALNUMCLUTF8 ALNUMC, no Match any alphanumeric character in locale
-NALNUMC NALNUMC, no Match any non-alphanumeric character
-NALNUMCUTF8 NALNUMC, no Match any non-alphanumeric character
-NALNUMCL NALNUMC, no Match any non-alphanumeric character in locale
-NALNUMCLUTF8 NALNUMC, no Match any non-alphanumeric character in locale
-ALPHA ALPHA, no Match any alphabetic character
-ALPHAUTF8 ALPHA, no Match any alphabetic character
-ALPHAL ALPHA, no Match any alphabetic character in locale
-ALPHALUTF8 ALPHA, no Match any alphabetic character in locale
-NALPHA NALPHA, no Match any non-alphabetic character
-NALPHAUTF8 NALPHA, no Match any non-alphabetic character
-NALPHAL NALPHA, no Match any non-alphabetic character in locale
-NALPHALUTF8 NALPHA, no Match any non-alphabetic character in locale
-ASCII ASCII, no Match any ASCII character
-NASCII NASCII, no Match any non-ASCII character
-CNTRL CNTRL, no Match any control character
-CNTRLUTF8 CNTRL, no Match any control character
-CNTRLL CNTRL, no Match any control character in locale
-CNTRLLUTF8 CNTRL, no Match any control character in locale
-NCNTRL NCNTRL, no Match any non-control character
-NCNTRLUTF8 NCNTRL, no Match any non-control character
-NCNTRLL NCNTRL, no Match any non-control character in locale
-NCNTRLLUTF8 NCNTRL, no Match any non-control character in locale
-GRAPH GRAPH, no Match any graphical character
-GRAPHUTF8 GRAPH, no Match any graphical character
-GRAPHL GRAPH, no Match any graphical character in locale
-GRAPHLUTF8 GRAPH, no Match any graphical character in locale
-NGRAPH NGRAPH, no Match any non-graphical character
-NGRAPHUTF8 NGRAPH, no Match any non-graphical character
-NGRAPHL NGRAPH, no Match any non-graphical character in locale
-NGRAPHLUTF8 NGRAPH, no Match any non-graphical character in locale
-LOWER LOWER, no Match any lowercase character
-LOWERUTF8 LOWER, no Match any lowercase character
-LOWERL LOWER, no Match any lowercase character in locale
-LOWERLUTF8 LOWER, no Match any lowercase character in locale
-NLOWER NLOWER, no Match any non-lowercase character
-NLOWERUTF8 NLOWER, no Match any non-lowercase character
-NLOWERL NLOWER, no Match any non-lowercase character in locale
-NLOWERLUTF8 NLOWER, no Match any non-lowercase character in locale
-PRINT PRINT, no Match any printable character
-PRINTUTF8 PRINT, no Match any printable character
-PRINTL PRINT, no Match any printable character in locale
-PRINTLUTF8 PRINT, no Match any printable character in locale
-NPRINT NPRINT, no Match any non-printable character
-NPRINTUTF8 NPRINT, no Match any non-printable character
-NPRINTL NPRINT, no Match any non-printable character in locale
-NPRINTLUTF8 NPRINT, no Match any non-printable character in locale
-PUNCT PUNCT, no Match any punctuation character
-PUNCTUTF8 PUNCT, no Match any punctuation character
-PUNCTL PUNCT, no Match any punctuation character in locale
-PUNCTLUTF8 PUNCT, no Match any punctuation character in locale
-NPUNCT NPUNCT, no Match any non-punctuation character
-NPUNCTUTF8 NPUNCT, no Match any non-punctuation character
-NPUNCTL NPUNCT, no Match any non-punctuation character in locale
-NPUNCTLUTF8 NPUNCT, no Match any non-punctuation character in locale
-UPPER UPPER, no Match any uppercase character
-UPPERUTF8 UPPER, no Match any uppercase character
-UPPERL UPPER, no Match any uppercase character in locale
-UPPERLUTF8 UPPER, no Match any uppercase character in locale
-NUPPER NUPPER, no Match any non-uppercase character
-NUPPERUTF8 NUPPER, no Match any non-uppercase character
-NUPPERL NUPPER, no Match any non-uppercase character in locale
-NUPPERLUTF8 NUPPER, no Match any non-uppercase character in locale
-XDIGIT XDIGIT, no Match any hexdigit character
-NXDIGIT NXDIGIT, no Match any non-hexdigit character
CLUMP CLUMP, no Match any combining character sequence
# BRANCH The set of branches constituting a single choice are hooked