[David]

I’m trying to capture several groups within a string using a regex. However once I reach greater than 9 back-references, they do not replace as I expected.

Eg: This is a bit of a contrived example.

Input string: abcdefghijklmnopqrstwhj
Find What: ^(.)(.)(.)(.)(.)(.)(.)(.)(.)(.)(.)(.)(.)(.)$
Replace With: \10

It doesn’t work. I also try $10, \g<10>, \$+10…..but failed. Does EmEditor support back references more than 9?

[Yutaka Emura]

Currently, EmEditor doesn’t support backreferences more than 9. If this is important, I will see if I can improve it.

[David]

It’s hard to say it’s important or not. Most case, 9 is enough. Occasionlly I need more.
For my current case, I use “batch replace all” function to resolve it and get successful.

During looking for help from Google, I saw someone mentioned Notepad++ support more than 9.

[Mr KT]

Yes please, can I second this request. Also, if at all possible, if named groups could be used as named backreferences for replace, that would be fantastic.

e.g. (Just a simple example but: ideally extended to more than 9 capture groups)

Find: (?<day>\d\d)(?<month>\d\d)(?<year>\d\d\d\d)

Replace: \k<year>\k<month>\k<day>

[Yutaka Emura]

EmEditor v19.1 beta 1 (19.0.91) supports backreferences more than 9 by using this form: $10, $11, $12, … We will release it shortly.

[David]

ありがとう;Thank You;고맙습니다;谢谢;DANKE.
Thanks for your quick response.

[Mr KT]

Thanks Yutaka,
$n seems to work great. Is it possible to implement named groups for Find and Replace, if the engine used is Onigmo? From the documentation (https://github.com/k-takata/Onigmo/blob/master/doc/RE), it seems as though it is supported?

e.g: Section 8. Backreferences
\k<name> \k’name’ backreference a group with the specified name

[Yutaka Emura]

The next version supports named capturing group by using this form: (?<name>expression) and named backreference by using this form: \k<name>.
Thank you!

[Author]

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