| SUBJECT ?? PATTERN | suspends substring matched by pattern resumes after the end of the last substring matched |
| SUBJECT ?? PATTERN := REPLACEMENT | replaces the substring matched with REPLACEMENT |
| PAT1 && PAT2 | Subsequent, matches PAT1 followed by PAT2 |
| PAT1 .| PAT2 | Alternate, matches PAT1 or PAT2 |
| PATTERN -> NAME | Conditional assignment of matched substring to variable |
| .$ |
Copy cursor position to variable |
| $$ |
Immediate assignment of matched substring to variable |
| ` ` |
Unevaluated variable or function
(discards result in case of functions and the pattern succeeds if
the function succeeded |
| `` `` |
Unevaluated function (pattern
succeeds if the result of the function matches) |
| PArb() |
Arbitrary number of characters |
| PRest() |
Remainder of subject |
| PLen(I) |
Match string of specified length |
| PPos(I) |
Match null string at specified cursor position |
| PRpos(I) |
Match null string at specified cursor position counting from subject end |
| PTab(I) |
Match to specified cursor position |
| PRTab(I) |
Match to specified cursor position counting from end |
| PAny(S) |
Match one character if it appears in S |
| PNotAny(S) |
Match one character if it does not appear in S |
| PBreak(S) | Match run of characters up to a character in S |
| PBreakx(S) |
Like PBreak(S), but can extend past first match |
| PSpan(S) |
Match one or more characters if they appear in S |