Regular Expressions 101

Negative Lookbehind(?<!^\s*)

^start of line

\s*a Unicode whitespace character, repeated any number of times

Positive Lookahead(?=<GTOL-[A-Z]+>)

<GTOL-the literal text <GTOL- (case sensitive)

Character Class[A-Z]+

+matches at least one character from the set below:

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

>the literal > (62₁₀ / 76₈ / 3E₁₆)

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

(?<!^\s*)(?=<GTOL-[A-Z]+>)

New

<GTOL-POSI>.010<MOD-MMC>B-C<GTOL-POSI>.002<MOD-FMC>

<GTOL-POSI><MOD-DIAM>.004<MOD-MMC>HC<MOD-MMC><GTOL-POSI>.030<MOD-MMC>D-E<MOD-FMC>

    <GTOL-POSI><MOD-DIAM>.005<MOD-MMC>AD-E<MOD-MMC><GTOL-PERP>.001A

Substitution

\n\n