regex101: PCRE (Legacy) Substitution Workspace

Pro

1st Alternativevolume

volumethe literal text volume (case insensitive)

2nd Alternativepart

partthe literal text part (case insensitive)

3rd Alternative(?<!, )(?:vol|pt)

Negative Lookbehind(?<!, )

, the literal text ,

Non-Capturing Group(?:vol|pt)

1st Alternativevol

volthe literal text vol (case insensitive)

2nd Alternativept

ptthe literal text pt (case insensitive)

4th Alternative(?:vol|pt)(?!\.)

Non-Capturing Group(?:vol|pt)

1st Alternativevol

volthe literal text vol (case insensitive)

2nd Alternativept

ptthe literal text pt (case insensitive)

Negative Lookahead(?!\.)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Global pattern flags

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

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

25 tokens

Regular Expression

volume|part|(?<!, )(?:vol|pt)|(?:vol|pt)(?!\.)

New

Should Match: 
 a) Any occurences of "Volume" OR "Part" (Case Insensitive);
 b) Any occurence of "vol" or "pt" (CI) that does not have [[comma][space] before AND [period] after;

My volume 1 
My name vol2.
My, volume 1 
, pt. vol2.

, part.
, pt.
, pt 
, vol
. pt.

// Should match below as there is no [period] after it
The Red Pill, Pt 2
, Pt 2

Substitution

Should Match: 
 a) Any occurences of "Volume" OR "Part" (Case Insensitive);
 b) Any occurence of "vol" or "pt" (CI) that does not have [[comma][space] before AND [period] after;

My volume 1 
My name vol2.
My, volume 1 
, pt. vol2.

, part.
, pt.
, pt 
, vol
. pt.

// Should match below as there is no [period] after it
The Red Pill, Pt 2
, Pt 2