regex101: GEDCOM parsing experiment

^start of line

Group 1(0|[1-9]+[0-9]*)

1st Alternative0

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

2nd Alternative[1-9]+[0-9]*

Character Class[1-9]+

+matches at least one character from the set below:

1-9one character from 1 (49₁₀) to 9 (57₁₀)

Character Class[0-9]*

*matches any number of characters from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

the literal (32₁₀ / 40₈ / 20₁₆)

Group 2(@[^@]+@ |)

1st Alternative@[^@]+@

@the literal @ (64₁₀ / 100₈ / 40₁₆)

Negated Character Class[^@]+

+matches at least one character outside the set below:

@the literal @ (64₁₀ / 100₈ / 40₁₆)

@ the literal text @

2nd Alternative — matches an empty string

Group 3([A-Za-z0-9_]+)

Character Class[A-Za-z0-9_]+

+matches at least one character from the set below:

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

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

0-9one character from 0 (48₁₀) to 9 (57₁₀)

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

Group 4( [^\n\r]*|)

1st Alternative [^\n\r]*

the literal (32₁₀ / 40₈ / 20₁₆)

Negated Character Class[^\n\r]*

*matches any number of characters outside the set below:

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

\ra carriage return (ASCII 13)

2nd Alternative — matches an empty string

$end of line

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

^(0|[1-9]+[0-9]*) (@[^@]+@ |)([A-Za-z0-9_]+)( [^\n\r]*|)$

New

0 @N1@ NOTE Lorem ipsum dolor sit amet
0 HEAD
1 SOUR FTM
2 VERS 22.2.6.950
1 DEST FTM
1 DATE 31 MAR 2017
1 CHAR UTF-8
3 _LINK http://www.facebook.com/1247584965
2 SOUR @S122@
3 PAGE Facebook update - David Hatch - 6/5/2013
3 _LINK http://www.facebook.com/1247584965


1 RESI
2 DATE BET 1935 AND 1993
2 PLAC San Francisco, California, USA
1 RESI
2 DATE 1994
2 PLAC San Francisco, California, USA
2 SOUR @S605@
3 DATA
4 TEXT Birth date:  20 Sep 1966 Birth place:   Residence date:  1994 
5 CONC Residence place:  San Francisco, CA
1 RESI 106 Oakcrest Rd
2 DATE 26 MAR 2017
2 PLAC San Anselmo, Marin, California, USA
1 FAMS @F500@
1 FAMC @F656@
0 @I923@ INDI
1 NAME Vincent /Crilley/
1 SEX M
1 FAMS @F254@
0 @I5899@ INDI
1 NAME Marjorie Edna /Footitt/
2 SOUR @S506@
2 SOUR @S176@
2 SOUR @S168@
2 SOUR @S624@
3 DATA
4 TEXT Residence date:   Residence place:  USA
2 SOUR @S115@
3 PAGE Year: 1940; Census Place: St Paul, Ramsey, Minnesota; Roll: T627_1996; 
4 CONC Page: 11A; Enumeration District: 90-73.
3 DATA
4 _TEXT Birth date:  abt 1918 Birth place:  North Dakota Residence date:  1 
5 CONC Apr 1940 Residence place:  St Paul, Ramsey, Minnesota, United States
2 SOUR @S607@
3 PAGE Year: 1920; Census Place: Carrington, Foster, North Dakota; Roll: 
4 CONC T625_1334; Page: 13B; Enumeration District: 117; Image: .
3 DATA

Regular Expressions 101

Regular Expression

Substitution