Regular Expressions 101

(?i)applies the following effective flags to the remainder of the pattern: gmi

i modifier: insensitive. Matches without distinguishing uppercase and lowercase letters

Group 1(\b|[Â¡Â¿])

1st Alternative\b

\ban ASCII word boundary

2nd Alternative[Â¡Â¿]

Character Class[Â¡Â¿]

Âthe literal Â (194₁₀ / 302₈ / C2₁₆) (case insensitive)

¡the literal ¡ (161₁₀ / 241₈ / A1₁₆)

¿the literal ¿ (191₁₀ / 277₈ / BF₁₆)

Group uno(?<uno>[^\s]+\s[^,]+)

Negated Character Class[^\s]+

+matches at least one character outside the set below:

\sany whitespace character

Negated Character Class[^,]+

+matches at least one character outside the set below:

,the literal , (44₁₀ / 54₈ / 2C₁₆)

\sany whitespace character

Group 3(\k<uno>)

\k<uno>the text saved by group uno

Group 4([?!]|\b)

1st Alternative[?!]

Character Class[?!]

?the literal ? (63₁₀ / 77₈ / 3F₁₆)

!the literal ! (33₁₀ / 41₈ / 21₁₆)

2nd Alternative\b

\ban ASCII word boundary

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

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

(?i)(\b|[Â¡Â¿])(?<uno>[^\s]+\s[^,]+),\s(\k<uno>)([?!]|\b)

- Dios mÃo, Â¡estÃ¡ aquÃ, estÃ¡ aquÃ!

- Â¿QuÃ© paso, quÃ© paso?

- Me rehÃºso, me rehÃºso.