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| author | Russ Cox <rsc@golang.org> | 2025-01-08 11:27:07 -0500 |
|---|---|---|
| committer | Russ Cox <rsc@golang.org> | 2025-04-18 14:13:38 -0700 |
| commit | 930cf59ba8091bfd56c71357085bc7de74daf421 (patch) | |
| tree | 844b9b05136e53cd788676b7b377ef9ef6f5ef86 /src/regexp/syntax/parse_test.go | |
| parent | 28fd9fa8a6de5f5e75a3ca2eeaa55b5ae4a2722b (diff) | |
| download | go-930cf59ba8091bfd56c71357085bc7de74daf421.tar.xz | |
regexp/syntax: recognize category aliases like \p{Letter}
The Unicode specification defines aliases for some of the general
category names. For example the category "L" has alias "Letter".
The regexp package supports \p{L} but not \p{Letter}, because there
was nothing in the Unicode tables that lets regexp know about Letter.
Now that package unicode provides CategoryAliases (see #70780),
we can use it to provide \p{Letter} as well.
This is the only feature missing from making package regexp suitable
for use in a JSON-API Schema implementation. (The official test suite
includes usage of aliases like \p{Letter} instead of \p{L}.)
For better conformity with Unicode TR18, also accept case-insensitive
matches for names and ignore underscores, hyphens, and spaces;
and add Any, ASCII, and Assigned.
Fixes #70781.
Change-Id: I50ff024d99255338fa8d92663881acb47f1e92a5
Reviewed-on: https://go-review.googlesource.com/c/go/+/641377
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Alan Donovan <adonovan@google.com>
Diffstat (limited to 'src/regexp/syntax/parse_test.go')
| -rw-r--r-- | src/regexp/syntax/parse_test.go | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/regexp/syntax/parse_test.go b/src/regexp/syntax/parse_test.go index 0f885bd5c8..9d2f698e25 100644 --- a/src/regexp/syntax/parse_test.go +++ b/src/regexp/syntax/parse_test.go @@ -107,10 +107,16 @@ var parseTests = []parseTest{ {`[\P{^Braille}]`, `cc{0x2800-0x28ff}`}, {`[\pZ]`, `cc{0x20 0xa0 0x1680 0x2000-0x200a 0x2028-0x2029 0x202f 0x205f 0x3000}`}, {`\p{Lu}`, mkCharClass(unicode.IsUpper)}, + {`\p{Uppercase_Letter}`, mkCharClass(unicode.IsUpper)}, + {`\p{upper case-let ter}`, mkCharClass(unicode.IsUpper)}, + {`\p{__upper case-let ter}`, mkCharClass(unicode.IsUpper)}, {`[\p{Lu}]`, mkCharClass(unicode.IsUpper)}, {`(?i)[\p{Lu}]`, mkCharClass(isUpperFold)}, {`\p{Any}`, `dot{}`}, {`\p{^Any}`, `cc{}`}, + {`(?i)\p{ascii}`, `cc{0x0-0x7f 0x17f 0x212a}`}, + {`\p{Assigned}`, mkCharClass(func(r rune) bool { return !unicode.In(r, unicode.Cn) })}, + {`\p{^Assigned}`, mkCharClass(func(r rune) bool { return unicode.In(r, unicode.Cn) })}, // Hex, octal. {`[\012-\234]\141`, `cat{cc{0xa-0x9c}lit{a}}`}, |