regex101: PCRE (Legacy) Match Workspace

(?s)applies the following effective flags to the remainder of the pattern: gs

s modifier: single line. Allows a dot to match line terminators

Positive Lookahead(?=[^:]*\d[^:]*:)

Negated Character Class[^:]*

*matches any number of characters outside the set below:

:the literal : (58₁₀ / 72₈ / 3A₁₆)

\da digit

Negated Character Class[^:]*

*matches any number of characters outside the set below:

:the literal : (58₁₀ / 72₈ / 3A₁₆)

Group 1(([0-9]{1,2}h)?[ ]*([0-9]{1,2}min)?:\s*)

Group 2([0-9]{1,2}h)?

?repeats the group contents below at most once:

Character Class[0-9]{1,2}

{1,2}matches between 1 and 2 characters from the set below:

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

hthe literal h (104₁₀ / 150₈ / 68₁₆) (case sensitive)

Character Class[ ]*

*matches any number of characters from the set below:

the literal (32₁₀ / 40₈ / 20₁₆)

Group 3([0-9]{1,2}min)?

?repeats the group contents below at most once:

Character Class[0-9]{1,2}

{1,2}matches between 1 and 2 characters from the set below:

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

minthe literal text min (case sensitive)

:the literal : (58₁₀ / 72₈ / 3A₁₆)

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

Group 4((?:.(?!(\dh\s\d{1,2}min|\dh|\d{1,2}min)))+)

Non-Capturing Group(?:.(?!(\dh\s\d{1,2}min|\dh|\d{1,2}min)))+

+repeats the group contents below at least once:

.any character

Negative Lookahead(?!(\dh\s\d{1,2}min|\dh|\d{1,2}min))

Group 5(\dh\s\d{1,2}min|\dh|\d{1,2}min)

1st Alternative\dh\s\d{1,2}min

\da digit

hthe literal h (104₁₀ / 150₈ / 68₁₆) (case sensitive)

\sany whitespace character

\d{1,2}a digit, repeated between 1 and 2 times

minthe literal text min (case sensitive)

2nd Alternative\dh

\da digit

hthe literal h (104₁₀ / 150₈ / 68₁₆) (case sensitive)

3rd Alternative\d{1,2}min

\d{1,2}a digit, repeated between 1 and 2 times

minthe literal text min (case sensitive)

Global pattern flags

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

Search reference

Regular Expression

(?s)(?=[^:]*\d[^:]*:)(([0-9]{1,2}h)?[ ]*([0-9]{1,2}min)?:\s*)((?:.(?!(\dh\s\d{1,2}min|\dh|\d{1,2}min)))+)

New

1h 30min: Title 
- Description Line 1
3h: SECOND TITLE
- Description Line 1
- Description Line 2
- Description Line 3


1h 14min: Title 
- another Great one 42min: Title - Great Movie
- Description Line 2
- Description Line 3