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Regex editorial improvements, and permit "." #1470

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merged 6 commits into from
Jun 18, 2024
Merged

Regex editorial improvements, and permit "." #1470

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a1c35bc
regex clarifications
lukem Nov 11, 2023
ae1ed5d
regex: allow "." to be used as a simple quantifier
lukem Nov 11, 2023
65b250c
regex: "." is an atom not quantifier
lukem Feb 22, 2024
464409a
regex: replace "quote" with `code`
lukem Feb 22, 2024
1e16aa4
regex: clarify simple grouping
lukem Feb 22, 2024
ac0a13c
regex: separate bullets for complemented classes
lukem Feb 22, 2024
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16 changes: 9 additions & 7 deletions jsonschema-core.md
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Original file line number Diff line number Diff line change
Expand Up @@ -400,14 +400,16 @@ tokens:

- individual Unicode characters, as defined by the [JSON
specification](#rfc8259);
- simple character classes ([abc]), range character classes ([a-z]);
- complemented character classes ([^abc], [^a-z]);
- simple quantifiers: "+" (one or more), "*" (zero or more), "?" (zero or one),
and their lazy versions ("+?", "*?", "??");
- range quantifiers: "{x}" (exactly x occurrences), "{x,y}" (at least x, at most
- simple atoms: `.` (any character except line terminator);
- simple character classes (`[abc]`), range character classes (`[a-z]`);
- complemented simple character classes (`[^abc]`);
- complemented range character classes (`[^a-z]`);
- simple quantifiers: `+` (one or more), `*` (zero or more), `?` (zero or one),
and their lazy versions (`+?`, `*?`, `??`);
- range quantifiers: `{x}` (exactly x occurrences), `{x,y}` (at least x, at most
y, occurrences), {x,} (x occurrences or more), and their lazy versions;
- the beginning-of-input ("^") and end-of-input ("$") anchors;
- simple grouping ("(...)") and alternation ("|").
- the beginning-of-input (`^`) and end-of-input (`$`) anchors;
- simple grouping (using `(` and `)`) and alternation (`|`).

Finally, implementations MUST NOT take regular expressions to be anchored,
neither at the beginning nor at the end. This means, for instance, the pattern
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