Regular Expressions 101

^start of line

Character Class[ \t]*

*matches any number of characters from the set below:

the literal (32₁₀ / 40₈ / 20₁₆)

\ta tab character (ASCII 9)

Character Class[\r\n]+

+matches at least one character from the set below:

\ra carriage return (ASCII 13)

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

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

^[ \t]*[\r\n]+

New

    P0:::inicial
    P1:::pregunta
    P2:::pregunta
    P3:::pregunta
    R1:::respuesta
    R2:::respuesta
    R3:::respuesta
    R4:::respuesta
    R5:::respuesta
    R6:::respuesta
    R7:::respuesta
    R8:::respuesta
    R9:::respuesta
    C1:::cotizacion
    C2:::cotizacion
    C3:::cotizacion
    A1:::agregar
    A2:::agregar
                         
    C4:::cotizacion

Regular Expression

Substitution