Regular Expressions 101

Pro

^start of line

.*?any Unicode character (except for line terminators), repeated any number of times

\ba Unicode word boundary

Juniorthe literal text Junior (case sensitive)

\ba Unicode word boundary

Group 1(\\)?

?repeats the group contents below at most once:

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

Condition(?(1)|.*)

Uses the first branch if group 1 matched

If the condition is true, match this branch: — matches an empty string

Otherwise, match this branch:.*

.*any Unicode character (except for line terminators), repeated any number of times

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.

25 tokens

^.*?\bJunior\b(\\)?(?(1)|.*)

New

C:\temp\John Smith Junior\file.pdf
C:\temp\John Smith Junior\John Smith Junior\file.pdf
C:\temp\John Smith Junior file.pdf

C:\temp\John Smith Junior\file.pdf
C:\temp\John Smith Junior\John Smith Junior\file.pdf
C:\temp\John Smith Junior file.pdf