MobileRead Forums - View Single Post - Search & Replace: Prepending something in the comments field

chaley · 04-04-2021, 05:07 AM

In Python 3 the regexp engine changed. The pattern .* matches both the zero-width 'thing' at the beginning of the line and the entire line. Because there were two matches your string was prepended twice.

Use either ^, which matches before the first character, or .+, which won't do a zero-width match.

04-04-2021, 05:07 AM	#2
chaley Grand Sorcerer Posts: 12,453 Karma: 8012886 Join Date: Jan 2010 Location: Notts, England Device: Kobo Libra 2	In Python 3 the regexp engine changed. The pattern .* matches both the zero-width 'thing' at the beginning of the line and the entire line. Because there were two matches your string was prepended twice. Use either ^, which matches before the first character, or .+, which won't do a zero-width match.