CODEWITHSUNDEEP
regexnotepad++
Bossmonkey
Bossmonkey

Reputation: 11

Find and Partially Replace Notepad++ Regex

I have a file with a file with lines containing a space, 9 digits, 6 spaces and 5C18. Finding it is easy I'm using

\s\d{9}\s{6}\5C18

The problem is that I need to replace the space at the beginning of the line with a letter, say F. So that everything else remains in tact. Every time I try to do it the entire line is replaced with the expression. I know this is probably something stupidly basic but any help would be appreciated.

Upvotes: 0

Views: 77

Answers (1)

Sergey Kalinichenko
Sergey Kalinichenko

Reputation: 726599

Move the part that you do not wish to replace into a lookahead expression:

^\s(?=\d{9}\s{6}5C18)

Now the portion in (?= ... ) is not considered part of the match; only the initial space is. Hence, running a replace with this regex would let you replace the initial space with whatever characters that you want.

It's text on a single line. The F needs to go where that first space is at the beginning of the line.

Note the use of ^ anchor to ensure that the match of the initial space is tied to the beginning of the line.

Upvotes: 1

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