Evaluate an expression while replacing in Notepad++

Question

Input:
3
9
16

I need an output file which adds a constant 10 to every element in input-

Output:
13
19
26

Is there a quick way to evaluate expressions in Notepad++? I tried a couple of things, including:

Search: [0-9]+
Replace: $0+10

But the output I get is:

3+10
9+10
16+10

Would be interesting to see if there is a way to edit a backreference without the use of some scripting plugin. Though I doubt it =). Here are some related questions I found that might provide some insight: [here](https://stackoverflow.com/q/20506990/9758194) and [here](https://superuser.com/q/968315/1059206) — JvdV, Feb 25 '20 at 16:32
**Duplicate of [Notepad++ Find/Replace number with Increment Value](https://stackoverflow.com/questions/37300462/)** — Wiktor Stribiżew, Feb 28 '20 at 19:00

score 1 · Accepted Answer · answered Feb 25 '20 at 16:33

1

You can run a python script within the PythonScript plugin.

If it is not yet installed, follow this guide

Create a script (Plugins >> PythonScript >> New Script)

Copy this code and save the file (for example calculate.py):

import re
def calculate(match):
    return '%s' % (str(int(match.group(1)) + 10))

editor.rereplace('(\d+)', calculate)

answered Feb 25 '20 at 16:33

Toto

Thanks, it works. I had no idea, I could integrate Python in this. – Tushar Feb 25 '20 at 16:49
@Tushar: You're welcome, glad it helps.These python scripts are very usefull to bypass the Notepad++ limitations. – Toto Feb 25 '20 at 16:52
@Tushar: Don't worry, I'm sure you didn't. – Toto Feb 28 '20 at 11:45

1 Answers1