regex101: Typographic correction for SI units

\ban ASCII word boundary

Group number(?<number>[\d,]+(?:\.\d+)?)

Character Class[\d,]+

+matches at least one character from the set below:

\da digit

,the literal , (44₁₀ / 54₈ / 2C₁₆)

Non-Capturing Group(?:\.\d+)?

?repeats the group contents below at most once:

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d+a digit, repeated at least once

Group space(?<space> ?|&[^;]{2,7};)

1st Alternative ?

?optionally matches the literal (32₁₀ / 40₈ / 20₁₆)

2nd Alternative&[^;]{2,7};

&the literal & (38₁₀ / 46₈ / 26₁₆)

Negated Character Class[^;]{2,7}

{2,7}matches between 2 and 7 characters outside the set below:

;the literal ; (59₁₀ / 73₈ / 3B₁₆)

Group dimensions(?<dimensions>(?:(?<mathjax>\$[^\n\$]+\$)|(?<unit>(?:Y|Z|E|P|T|G|M|k|h|da|d|c|m|µ|n|p|f|a|z|y)?(?:m|g|s|A|K|mol|cd|Hz|N|Pa|J|W|C|V|F|Ω|S|Wb|T|H|lm|lx|Bq|Gy|Sv|kat|l|L))))

Non-Capturing Group(?:(?<mathjax>\$[^\n\$]+\$)|(?<unit>(?:Y|Z|E|P|T|G|M|k|h|da|d|c|m|µ|n|p|f|a|z|y)?(?:m|g|s|A|K|mol|cd|Hz|N|Pa|J|W|C|V|F|Ω|S|Wb|T|H|lm|lx|Bq|Gy|Sv|kat|l|L)))

1st Alternative(?<mathjax>\$[^\n\$]+\$)

Group mathjax(?<mathjax>\$[^\n\$]+\$)

\$the literal $ (36₁₀ / 44₈ / 24₁₆)

Negated Character Class[^\n\$]+

+matches at least one character outside the set below:

\na line-feed (newline) character (ASCII 10)

\$the literal $ (36₁₀ / 44₈ / 24₁₆)

2nd Alternative(?<unit>(?:Y|Z|E|P|T|G|M|k|h|da|d|c|m|µ|n|p|f|a|z|y)?(?:m|g|s|A|K|mol|cd|Hz|N|Pa|J|W|C|V|F|Ω|S|Wb|T|H|lm|lx|Bq|Gy|Sv|kat|l|L))

Group unit(?<unit>(?:Y|Z|E|P|T|G|M|k|h|da|d|c|m|µ|n|p|f|a|z|y)?(?:m|g|s|A|K|mol|cd|Hz|N|Pa|J|W|C|V|F|Ω|S|Wb|T|H|lm|lx|Bq|Gy|Sv|kat|l|L))

Non-Capturing Group(?:Y|Z|E|P|T|G|M|k|h|da|d|c|m|µ|n|p|f|a|z|y)?

?repeats the group contents below at most once:

1st AlternativeY

Ythe literal Y (89₁₀ / 131₈ / 59₁₆) (case sensitive)

2nd AlternativeZ

Zthe literal Z (90₁₀ / 132₈ / 5A₁₆) (case sensitive)

3rd AlternativeE

Ethe literal E (69₁₀ / 105₈ / 45₁₆) (case sensitive)

4th AlternativeP

Pthe literal P (80₁₀ / 120₈ / 50₁₆) (case sensitive)

5th AlternativeT

Tthe literal T (84₁₀ / 124₈ / 54₁₆) (case sensitive)

6th AlternativeG

Gthe literal G (71₁₀ / 107₈ / 47₁₆) (case sensitive)

7th AlternativeM

Mthe literal M (77₁₀ / 115₈ / 4D₁₆) (case sensitive)

8th Alternativek

kthe literal k (107₁₀ / 153₈ / 6B₁₆) (case sensitive)

9th Alternativeh

hthe literal h (104₁₀ / 150₈ / 68₁₆) (case sensitive)

10th Alternativeda

dathe literal text da (case sensitive)

11th Alternatived

12th Alternativec

13th Alternativem

14th Alternativeµ

15th Alternativen

16th Alternativep

17th Alternativef

18th Alternativea

19th Alternativez

20th Alternativey

Non-Capturing Group(?:m|g|s|A|K|mol|cd|Hz|N|Pa|J|W|C|V|F|Ω|S|Wb|T|H|lm|lx|Bq|Gy|Sv|kat|l|L)

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Search reference

Regular Expression

\b(?<number>[\d,]+(?:\.\d+)?)(?<space> ?|&[^;]{2,7};)(?<dimensions>(?:(?<mathjax>\$[^\n\$]+\$)|(?<unit>(?:Y|Z|E|P|T|G|M|k|h|da|d|c|m|µ|n|p|f|a|z|y)?(?:m|g|s|A|K|mol|cd|Hz|N|Pa|J|W|C|V|F|Ω|S|Wb|T|H|lm|lx|Bq|Gy|Sv|kat|l|L))))

Unit Tests

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