UVviewsoft forums

1. Input text: 0 1 2 3 4 5 6 7 8 9
2. Open Replace dialog (Ctrl+R) and enable regex mode (Alt+R)
   Search string: \d
   Replace string: \d
3. Press "Replace all" (Alt+A)
4. Result text: d d d d d d d d d d

• If repeat with:
  Search string: \d
  Replace string: \\d
  then result text (that expected result): \d \d \d \d \d \d \d \d \d \d

How to fix this behavior?

• CudaText 1.149.3 x64
• Windows 7 SP1 x64

The '\d' in the REPLACE field has no meaning! so editor reads it as "escaped d char" == "d".
The "\\d" is similar : "escaped slash + d".
What do you want to replace with what?
Maybe try to replace '\d' with '\\$0'.

It is necessary to replace any digits in the text with "\d":
"0" to "\d"
...
"9" to "\d"

Why use escaping for "\d" or "\u" or "\w" (but not for "[" or "]" or "^" etc) in the replacement string? Is the "Replace" field also in regex mode?

Somehow yes, it is-- some behaviour of the TRegExpr engine, which I may fix if its needed. How other good editors handle this case?

SublimeText: acts like Cud now!
VSCode: not like Cud.
Not sure we need to change this.

Supporting \ as escape is good - because we can set 'replace with' as '\n' and it will replace with EOLs. Same for '\t'.

Ok. What about large fragments of code or markup? Each time you will have to first escape all the characters in the replacement string text.

SublimeText users live with it somehow. maybe for large fragments, we should not use Regex.

Yes "\n", "\t", "\r" etc. - is good. But mode work with "\q" and other characters.

Maybe take into account only:

• Predefined escape-codes - https://regex.sorokin.engineer/en/lates ... cape-codes
• Substitute - https://regex.sorokin.engineer/ru/lates ... substitute

or make as option?

Now it's logical- each \ means escaping, so literal \ must be written as \\.
If I do \ not working in \d and \q, it will be less logical. hard for user to know when he needs escaping.