Pattern Syntax - Yes

Unicode Version 18.0

Yes is the designation for characters that Unicode officially recognizes as valid syntax elements within regular expression patterns, meaning they are permitted to appear as literals or operators in pattern definitions without needing escaping. This value applies to a specific set of punctuation marks, such as brackets, parentheses, asterisks, plus signs, question marks, and backslashes, which have well defined roles in pattern matching logic. Characters marked with "Yes" are excluded from being treated as ordinary text in such contexts, ensuring that pattern parsers can reliably interpret their intended function. This designation helps distinguish syntactically active symbols from those that are purely content characters, providing a consistent baseline for regex engines across different programming languages and tools.

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Times with Left Half Black

Times with Right Half Black

White Hourglass

Black Hourglass

Left Wiggly Fence

Right Wiggly Fence

Left Double Wiggly Fence

Right Double Wiggly Fence

Incomplete Infinity

Tie over Infinity

Infinity Negated with Vertical Bar

Double-Ended Multimap

Square with Contoured Outline

Shuffle Product

Equals Sign and Slanted Parallel

Equals Sign and Slanted Parallel with Tilde Above

Identical to and Slanted Parallel

Down-Pointing Triangle with Left Half Black

Down-Pointing Triangle with Right Half Black

Black Diamond with down Arrow

White Circle with down Arrow

Black Circle with down Arrow

Error-Barred White Square

Error-Barred Black Square

Error-Barred White Diamond

Error-Barred Black Diamond

Error-Barred White Circle

Error-Barred Black Circle

Reverse Solidus Operator

Solidus with Overbar

Reverse Solidus with Horizontal Stroke

Big Reverse Solidus

Left-Pointing Curved Angle Bracket

Right-Pointing Curved Angle Bracket

N-Ary Circled Dot Operator

N-Ary Circled Plus Operator

N-Ary Circled Times Operator

N-Ary Union Operator with Dot

N-Ary Union Operator with Plus

N-Ary Square Intersection Operator

N-Ary Square Union Operator

Two Logical and Operator

Two Logical or Operator

N-Ary Times Operator

Summation with Integral

Quadruple Integral Operator

Finite Part Integral

Integral with Double Stroke

Integral Average with Slash

Circulation Function

Anticlockwise Integration

Line Integration with Rectangular Path Around Pole

Line Integration with Semicircular Path Around Pole

Line Integration Not Including the Pole

Integral Around A Point Operator

Quaternion Integral Operator

Integral with Leftwards Arrow with Hook

Integral with Times Sign

Integral with Intersection

Integral with Union

Integral with Overbar

Integral with Underbar

Large Left Triangle Operator

Z Notation Schema Composition

Z Notation Schema Piping

Z Notation Schema Projection

Plus Sign with Small Circle Above

Plus Sign with Circumflex Accent Above

Plus Sign with Tilde Above

Plus Sign with Dot Below

Plus Sign with Tilde Below

Plus Sign with Subscript Two

Plus Sign with Black Triangle

Minus Sign with Comma Above

Minus Sign with Dot Below

Minus Sign with Falling Dots

Minus Sign with Rising Dots

Plus Sign in Left Half Circle

Plus Sign in Right Half Circle

Vector or Cross Product

Multiplication Sign with Dot Above

Multiplication Sign with Underbar

Semidirect Product with Bottom Closed

Multiplication Sign in Left Half Circle

Multiplication Sign in Right Half Circle

Circled Multiplication Sign with Circumflex Accent

Multiplication Sign in Double Circle

Circled Division Sign

Plus Sign in Triangle

Minus Sign in Triangle

Multiplication Sign in Triangle

Interior Product

Righthand Interior Product

Z Notation Relational Composition

Amalgamation or Coproduct

Intersection with Dot

Union with Minus Sign

Union with Overbar

Intersection with Overbar

Intersection with Logical And

Union with Logical Or

Union Above Intersection

Intersection Above Union

Union Above Bar Above Intersection

Intersection Above Bar Above Union

Union Beside and Joined with Union

Intersection Beside and Joined with Intersection

Closed Union with Serifs

Closed Intersection with Serifs

Double Square Intersection

Double Square Union

Closed Union with Serifs and Smash Product

Logical and with Dot Above

Logical or with Dot Above

Double Logical And

Double Logical Or

Two Intersecting Logical And

Two Intersecting Logical Or

Sloping Large Or

Sloping Large And

Logical or Overlapping Logical And

Logical and with Middle Stem

Logical or with Middle Stem

Logical and with Horizontal Dash

Logical or with Horizontal Dash

Logical and with Double Overbar

Logical and with Underbar

Logical and with Double Underbar

Small Vee with Underbar

Logical or with Double Overbar

Logical or with Double Underbar

Z Notation Domain Antirestriction

Z Notation Range Antirestriction

Equals Sign with Dot Below

Identical with Dot Above

Triple Horizontal Bar with Double Vertical Stroke

Triple Horizontal Bar with Triple Vertical Stroke

Tilde Operator with Dot Above

Tilde Operator with Rising Dots

Similar Minus Similar

Congruent with Dot Above

Equals with Asterisk

Almost Equal to with Circumflex Accent

Approximately Equal or Equal To

Equals Sign Above Plus Sign

Plus Sign Above Equals Sign

Equals Sign Above Tilde Operator

Double Colon Equal

Two Consecutive Equals Signs

Three Consecutive Equals Signs

Equals Sign with Two Dots Above and Two Dots Below

Equivalent with Four Dots Above

Less-than with Circle Inside

Greater-than with Circle Inside

Less-than with Question Mark Above

Greater-than with Question Mark Above

Less-than or Slanted Equal To

Greater-than or Slanted Equal To

Less-than or Slanted Equal to with Dot Inside

Greater-than or Slanted Equal to with Dot Inside

Less-than or Slanted Equal to with Dot Above

Greater-than or Slanted Equal to with Dot Above

Less-than or Slanted Equal to with Dot Above Right

Greater-than or Slanted Equal to with Dot Above Left

Less-than or Approximate

Greater-than or Approximate

Less-than and Single-Line Not Equal To

Greater-than and Single-Line Not Equal To

Less-than and Not Approximate

Greater-than and Not Approximate

Less-than Above Double-Line Equal Above Greater-Than

Greater-than Above Double-Line Equal Above Less-Than

Less-than Above Similar or Equal

Greater-than Above Similar or Equal

Less-than Above Similar Above Greater-Than

Greater-than Above Similar Above Less-Than

Less-than Above Greater-than Above Double-Line Equal

Greater-than Above Less-than Above Double-Line Equal

Less-than Above Slanted Equal Above Greater-than Above Slanted Equal

Greater-than Above Slanted Equal Above Less-than Above Slanted Equal

Slanted Equal to or Less-Than

Slanted Equal to or Greater-Than

Slanted Equal to or Less-than with Dot Inside

Slanted Equal to or Greater-than with Dot Inside

Double-Line Equal to or Less-Than

Double-Line Equal to or Greater-Than

Double-Line Slanted Equal to or Less-Than

Double-Line Slanted Equal to or Greater-Than

Similar or Less-Than

Similar or Greater-Than

Similar Above Less-than Above Equals Sign

Similar Above Greater-than Above Equals Sign

Double Nested Less-Than

Double Nested Greater-Than

Double Nested Less-than with Underbar

Greater-than Overlapping Less-Than

Greater-than Beside Less-Than

Less-than Closed by Curve

Greater-than Closed by Curve

Less-than Closed by Curve Above Slanted Equal

Greater-than Closed by Curve Above Slanted Equal

Smaller than or Equal To

Larger than or Equal To

Equals Sign with Bumpy Above

Precedes Above Single-Line Equals Sign

Succeeds Above Single-Line Equals Sign

Precedes Above Single-Line Not Equal To

Succeeds Above Single-Line Not Equal To

Precedes Above Equals Sign

Succeeds Above Equals Sign

Precedes Above Not Equal To

Succeeds Above Not Equal To

Precedes Above Almost Equal To

Succeeds Above Almost Equal To

Precedes Above Not Almost Equal To

Succeeds Above Not Almost Equal To

Double Precedes

Double Succeeds

Subset with Dot

Superset with Dot

Subset with Plus Sign Below

Superset with Plus Sign Below

Subset with Multiplication Sign Below

Superset with Multiplication Sign Below

Subset of or Equal to with Dot Above

Superset of or Equal to with Dot Above

Subset of Above Equals Sign

Superset of Above Equals Sign

Subset of Above Tilde Operator

Superset of Above Tilde Operator

Subset of Above Almost Equal To

Superset of Above Almost Equal To

Subset of Above Not Equal To

Superset of Above Not Equal To

Square Left Open Box Operator

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