Is there a way to adjust the provided SEARCH: " (?-s)(?-i:^EQD|(?!\A)\G).*?\K\h " to further clean spaces and tabs for all the following lines at once: EQD, NAD, LOC, MAE, RFF - but don’t touch line FTX?

Certainly. The changes are:
for my regex it becomes (I made an additional change putting the ^ outside of the lookahead)
(?-is)^(?=EQD|NAD|LOC|MAE|RFF).*?\K\h
and for @guy038 regex it would be
(?-s)(?-i:^(EQD|NAD|LOC|MAE|RFF)|(?!\A)\G).*?\K\h

You can easily see how it expands to any additional codes, so if you need to change it, you should be able to do so easily. Try that.

Terry

@guy038 @Terry-R

Is there a way to adjust the provided SEARCH: " (?-s)(?-i:^EQD|(?!\A)\G).*?\K\h " to further clean spaces and tabs for all the following lines at once: EQD, NAD, LOC, MAE, RFF - but don’t touch line FTX?

I welcome your feedback and thank you both again for your time.

Ah, yes, @terry-r, we may also use this variation :

(?-is)^(?=EQD).*?\K\h

Now, if more than one horizontal blank char is present, in a line beginning with EQD, these two syntaxes do not work !

In that case, we need to use the generic regex, belox, discussed in other posts, like this one :

https://community.notepad-plus-plus.org/post/62799

SEARCH (?-i:BSR|(?!\A)\G)(?s:(?!ESR).)*?\K(?-i:FR)

REPLACE RR

where :

• FR (Find Regex ) is the regex which defines the char, string or expression to be searched

• RR (Replacement Regex ) is the regex which defines the char, string or expression which must replace the FR expression

• BSR ( Begin Search-region Regex ) is the regex which defines the beginning of the area where the search for FR, must start

• ESR ( End Search-region Regex) is the regex which defines, implicitly, the area where the search for FR, must end

For @John-Tee’s need, we have :

• FR = \h

• RR = Empty string

• BSR = ^EQD

• ESR is implicit and we don’t need the (?s:(?!ESR).)*? syntax . Indeed, due to the (?-s) modifier, the range of chars, matched with the part .*? cannot go beyond the current line, anyway, as the line-break char(s) are not allowed !

Thus, if several space or tabulation characters may appear in the EQD...... lines, the appropriate regex S/R is rather :

SEARCH (?-s)(?-i:^EQD|(?!\A)\G).*?\K\h

REPLACE Leave EMPTY

Best Regards,

guy038

I want to find all “EQD” lines and remove all spaces and tabs from JUST those lines.

Using the Replace function we have:
Find What:(?-is)(?=^EQD).*?\K\h
Replace With:nothing in this field empty

As this is a regular expression the search mode MUST be regular expression and you must use the “Replace All” button as I have used the \K meta character in the expression. Run it multiple times if any line has more than 1 instance of a blank space or tab (you can see when it’s completed when the Replace Window states “0 occurances were replaced in entire file”. This expression will remove ONLY one at a time from each of the lines with EQD in then, it will not touch any line with eqd

Terry