62

I have

12.hello.mp3
21.true.mp3
35.good.mp3
.
.
.

so on as file names in listed in a text file.

I need to replace only those dots(.) infront of numbers with a space.(e.g. 12.hello.mp3 => 12 hello.mp3). If I have regex as "[0-9].", it replaces number also. Please help me.

Srikanth P Vasist
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  • Possible duplicate of [Using Notepad++ Regex to Find and Replace Only Part of Found Text](http://stackoverflow.com/questions/13164312/using-notepad-regex-to-find-and-replace-only-part-of-found-text) – Clijsters Apr 06 '17 at 09:03

3 Answers3

96

Replace

^(\d+)\.(.*mp3)$

with

\1 \2

Also, in recent versions of notepad++, it will also accept the following, which is also accepted by other IDEs/editors (eg. JetBrains products like Intellij IDEA):

$1 $2

This assumes that the notepad++ regex matching engine supports groups. What the regex basically means is: match the digits in front of the first dot as group 1 and everything after it as group 2 (but only if it ends with mp3)

Ioan Alexandru Cucu
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4

I tested with vscode. You must use groups with parentheses (group of regex)

Practical example

  • start with sample data
1 a text
2 another text
3 yet more text
  • Do the Regex to find/Search the numerical digits and spaces. The group here will be the digits as it is surrounded in parenthesis
(\d)\s
  • Run a replace regex ops. Replace spaces for a dash but keep the numbers or digits in each line
$1-
  • Outputs
1-a text
2-another text
3-yet more text
Andre Leon Rangel
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-1

Using the basic pattern, well described in the accepted answer here is an example to add the class="odd" and class="even" to every <tr> element in Notepad++ or any other regex compatible editor:

Find what: (<tr><td>)(.*?\r\n)(<tr><td>)(.*?\r\n)

Replace with: <tr class="odd"><td>\2<tr class="even"><td>\4

eapo
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