regex - How to check if there are doubles in the same line? -


i have text file many lines this:

img_0106.jpg    y:\2004_05_23_bern basel\       2004_05_23 img_0107.jpg    y:\2004_05_23_dortmund\         2004_05_23 img_0108.jpg    y:\2004_05_25_paris\            2004_05_24 img_0110.jpg    y:\2004_05_25_paris\            2004_05_25

i want check if there double dates in same line , not.

line 1,2,4 have date match.
line 3 doesn't have date match (2004_05_25 != 2004_05_24)

i know how find double lines don't know how find doubles in same line in case.
can please me?

this :g command regex give lines duplicated dates, can operations on lines:

:g/\v(\d{4}_\d{2}_\d{2}).*\1

if want find them, (or highlight them hlsearch), /sameregex


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