Regular Expressions 101

Positive Lookahead(?=[^])

[^]any character, including newline

Non-Capturing Group(?:\P{Sentence_Terminal}|\p{Sentence_Terminal}(?!['"`\p{Close_Punctuation}\p{Final_Punctuation}\s]))*

*repeats the group contents below any number of times:

1st Alternative\P{Sentence_Terminal}

\P{Sentence_Terminal}characters not matched by \p{Sentence_Terminal}

2nd Alternative\p{Sentence_Terminal}(?!['"`\p{Close_Punctuation}\p{Final_Punctuation}\s])

\p{Sentence_Terminal}characters for which the Sentence_Terminal binary property is true

Negative Lookahead(?!['"`\p{Close_Punctuation}\p{Final_Punctuation}\s])

Character Class['"`\p{Close_Punctuation}\p{Final_Punctuation}\s]

'the literal ' (39₁₀ / 47₈ / 27₁₆)

"the literal " (34₁₀ / 42₈ / 22₁₆)

`the literal ` (96₁₀ / 140₈ / 60₁₆)

\p{Close_Punctuation}a closing punctuation mark, such as a closing bracket

\p{Final_Punctuation}a final quotation mark

\sany whitespace character

Non-Capturing Group(?:\p{Sentence_Terminal}+['"`\p{Close_Punctuation}\p{Final_Punctuation}]*|$)

1st Alternative\p{Sentence_Terminal}+['"`\p{Close_Punctuation}\p{Final_Punctuation}]*

\p{Sentence_Terminal}+characters for which the Sentence_Terminal binary property is true, repeated at least once

Character Class['"`\p{Close_Punctuation}\p{Final_Punctuation}]*

*matches any number of characters from the set below:

'the literal ' (39₁₀ / 47₈ / 27₁₆)

"the literal " (34₁₀ / 42₈ / 22₁₆)

`the literal ` (96₁₀ / 140₈ / 60₁₆)

\p{Close_Punctuation}a closing punctuation mark, such as a closing bracket

\p{Final_Punctuation}a final quotation mark

2nd Alternative$

$end of string

Global pattern flags

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

u modifier: unicode. Enables Unicode-aware matching and escape syntax

y modifier: sticky. Matches only at the current search position instead of scanning ahead

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

(?=[^])(?:\P{Sentence_Terminal}|\p{Sentence_Terminal}(?!['"`\p{Close_Punctuation}\p{Final_Punctuation}\s]))*(?:\p{Sentence_Terminal}+['"`\p{Close_Punctuation}\p{Final_Punctuation}]*|$)

New

This is a sentence. This is another sentence.
df! bar. qolh "foo." 
This is a malformed sentence ending."another sentence starts.
This is MyEnum.Value1. lol!. ........ . . .eeeend 
. . .eeeend

Regular Expression

Extraction