In curso-r/scryr: An Interface to the 'Scryfall' API

You can use forward slashes // instead of quotes with the type://, t:// oracle://, o://, flavor://, ft://, and name:// keywords to match those parts of a card using regular expressions.

Regular expressions are very powerful, here are some examples of fancy searches you can make with regular expressions:

Scryfall Regex Flavor

Scryfall supports most POSIX regular expression constructs, many are detailed below. Our regular expressions have the following configuration and limits:

If your expression includes forward slashes / they must be escaped: \\/
Scryfall regular expressions are Unicode-aware. The . will match characters beyond the ASCII range.
Backreferences are not supported (\\1, \\2, etc).
All regular expressions are case-insensitive (i).
All regular expressions are "multiline" mode (m). Line anchors will match paragraphs in Oracle text, instead of the entire block.
All characters in your expression are significant and whitespace will be matched (sometimes listed as "tight mode").
You cannot add configuration to regular expressions on Scryfall. For example o:/tap/ will work while o:/tap/gi will not.
Scryfall regular expressions are match-only. Scryfall does not support extracting data from capture groups or performing substitutions.
Scryfall uses only the \n character for newlines in all text fields across our entire database. No fields include \r or \f.
The Scryfall database does not include bells (\a), null-bytes (\0), or other esoteric control characters.

Scryfall Extensions

Scryfall includes the following additional, non-standard regex features:

| Syntax | Feature | | ------- | ---------------------------------------------------------------------------------------- | | ~ | An automatic alias for the current card name or "this spell" if the card mentions itself | | \\sm | Short-hand escape for any mana symbol | | \\ss | Short-hand escape for any card symbol | | \\spt | Short-hand escape for a X/X power/toughness expression | | \\spp | Short-hand escape for a +X/+X power/toughness expression | | \\smm | Short-hand escape for a -X/-X power/toughness expression |

Atoms

The following atoms are supported:

| Atom | Description | | ---------- | --------------------------------------------------------------------------------------------------------------------------------------------------- | | . | Any single character | | [kf] | Bracket expression matching a single character which is k or f (or any other group of literal characters) | | [^kf] | Bracket expression matching a single character which is not k or f (or any other group of literal characters) | | [f-k] | Bracket expression matching a single character which is between f through k in Unicode, inclusive (or any other range of of literal characters) | | (re) | A group that matches the expression re | | (re|fe) | A group that matches either the expression re or fe. | is the pipe character | | \\k | A literal escaped k (or any other character) | | k | The character k (or another non-meta character) |

Quantifiers

The following quantifiers are supported:

| Quantifier | Description | | ---------- | ------------------------------------------------------------------------------------ | | * | A sequence of 0 or more matches of the atom | | + | A sequence of 1 or more matches of the atom | | ? | A sequence of 0 or 1 matches of the atom | | {M} | A sequence of exactly M matches of the atom, where M is a number | | {M,} | A sequence of M or more matches of the atom | | {M,N} | A sequence of M through N (inclusive) matches of the atom; M cannot exceed N | | *? | Non-greedy version of * | | +? | Non-greedy version of + | | ?? | Non-greedy version of ? | | {M}? | Non-greedy version of {M} | | {M,}? | Non-greedy version of {M,} | | {M,N}? | Non-greedy version of {M,N} |

Anchors and Lookarounds

The following anchors/lookarounds are supported:

| Anchor | Description | | --------- | -------------------------------------------------------------------------------- | | ^ | Matches at the beginning of a line or the beginning of the field | | $ | Matches at the end of a line or the end of the field | | \\b | Matches the boundary of a word | | (?=re) | Positive lookahead: matches at any point where a substring matching re begins | | (?!re) | Negative lookahead: matches at any point where no substring matching re begins | | (?<=re) | Positive lookbehind: matches at any point where a substring matching re ends | | (?<!re) | Negative lookbehind: matches at any point where no substring matching re ends |

Character Classes

The following character classes are supported:

| Class | Description | | --------- | ------------------------------------------------------------------------------------------------------ | | \\n | Matches a newline | | \\s | Matches any whitespace | | \\d | Matches a single digit character: 0-9 | | \\w | Matches any word character: A through z and 0 through 9 | | \\uHHHH | Matches a character whose hexadecimal value is HHHH, where HHHH is exactly four hexadecimal digits |