(image) how to find the green highlight part using regex?

regex101 https://regex101.com/r/knSRpd/3

where i think the problem lay at: is i used the lookahead to find the next line that didnt start with Tab. what I had tried: ^(?!\t)(^(FULL|SMALL))?(\S.\n$)?(\S.*?)(?=^(?!\t)\w ?|$(?!\n))

I tried to find the string sentence in between with end of line at \n (\S.\n$)?

CodePudding user response：

If you want to find all lines after FULL or SMALL that do not start with a tab:

^(FULL|SMALL)\b(.*(?:\n(?!\t).*)*)

• ^ Start of string
• (FULL|SMALL)\b Capture either FULL or SMALL in group 1
• ( Capture group 2
  • .* Match the rest of the line
  • (?:\n(?!\t).*)* Optionally repeat matching the next lines if they don't start with a tab
• ) Close the non capture group

In the replacement, use group $1 and group $2

Regex demo

If you only want to match lines that start with a non whitespace char to prevent matching empty lines

^(FULL|SMALL)\b(.*(\n\S.*)*)

Regex demo

CodePudding user response：

You can use

/^(FULL|SMALL)\b(.*(?:\n(?!\t|FULL\b|SMALL\b).*)*)/gm
/^(FULL|SMALL)\b(.*(?:\n(?!\t).*)*)/gm

The replacement will need adjusting (since there are just two capturing groups in the pattern now) to

<div class="PANEL $1">\n<div class="action">$2</div></div>\n\n

See the regex demo. Details:

• ^ - start of string
• (FULL|SMALL)\b - FULL or SMALL as whole words
• (.*(?:\n(?!\t|FULL\b|SMALL\b).*)*) - Group 2:
  • .* - the rest of the line
  • (?:\n(?!\t|FULL\b|SMALL\b).*)* - zero or more lines that do not start with a TAB, FULL or SMALL as whole words. If you use (?!\t), the checks for FULL and SMALL will not be triggered and even if the line starts with these words, it will get consumed.