End of line - add a pipe |

Question

Can someone explain how at the end of each line I place a pipe with regex?

Using find and replace in notepad ++

I'm trying to place content |

Cheers!

Answer 1

If you just want to add a pipe at the end of each line, simply use this 'find' regex:

$

(The dollar symbol matches the end of a line in regex)

And this 'replace':

|

Make sure you enabled regular expression find.

Answer 2

Find what: (.*)

Replace with: $1|

This uses grouping, so $1 is basically saying insert what was found in parentheses, and then add the pipe onto the end. The . will capture any character except certain whitespace, such as newlines which is ideal in this situation. The * means allow 0 or more characters to be captured with the .

This is scaleable, so if you want to capture only certain line, e.g. lines that contain test:

Find what: (.*test.*)

Replace with: $1|

So, if you enter those and then hit "Replace All", you'll have pipes at the end of each line that matches the regular expression.

Answer 3

Changed answer.
I would use this. I works in either single or multi line mode.
I'm not sure what notepad has available (i.e. search/replace, find/replace, etc..)
Look for this: (?=\r\n|\n|\r|$)
and insert (replace) this: |

Just some notes on that complicated subject of what $ metachar really is.
It's not as easy as it should be and the Docs leave a lot to be desired.

Anyway here is my take on it -

 # Regular Expression Docs:
 # Metacharacter  $ 
 # Match the end of the line (or before newline at the end)
 # ** This really is misworded, it really means:
 #
 #    In single line mode,
 #      In two separate matches (in global context) 
 #         Match before and after a newline at the end of a string if there is a newline,
 #      OR, Match the end of the string only.
 #
 #    In multi-line mode,
 #         Match before OR after a newline at the end of a line or string,
 #         but not both.
 #
 # ---------------------------------------------
 # The above explanation is conditional upon the qualifying 
 # subexpressions surrounding the $ metachar
 # ---------------------------------------------

 # /$/g  Single line mode:
 # Matches before newline (if there is one) AND end of string (always this)

 print "=== /\$/g ===============\n";
    $str = "0  ";          $str =~ s/$/|/g;  print "'$str'\n---\n";
    $str = "1  \n";        $str =~ s/$/|/g;  print "'$str'\n---\n";
    $str = "2  \n\n";      $str =~ s/$/|/g;  print "'$str'\n---\n";
    $str = "3  \n\n\n";    $str =~ s/$/|/g;  print "'$str'\n---\n";
    $str = "4  \n\n\n\n";  $str =~ s/$/|/g;  print "'$str'\n\n";

 # /$/mg   Multi-line mode:
 # Matches before each newline (if there is one) OR end of string (not both)

 print "===  /\$/mg ===============\n";
    $str = "0  ";          $str =~ s/$/|/mg;  print "'$str'\n---\n";
    $str = "1  \n";        $str =~ s/$/|/mg;  print "'$str'\n---\n";
    $str = "2  \n\n";      $str =~ s/$/|/mg;  print "'$str'\n---\n";
    $str = "3  \n\n\n";    $str =~ s/$/|/mg;  print "'$str'\n---\n";
    $str = "4  \n\n\n\n";  $str =~ s/$/|/mg;  print "'$str'\n\n";

 # /(?=\r\n|\n|\r|$)/g   Single line mode:
 # Parsing the expression for //m Multi-line mode,
 # Equivalent of /$/m  can now be run in Single line mode:
 # This is What /$/m  probably really is.
 # Matches before each newline (if there is one) OR end of string (not both)

 print "=== /(?=\\r\\n|\\n|\\r|\$)/g ==============\n";
    $str = "0  ";          $str =~ s/(?=\r\n|\n|\r|$)/|/g;  print "'$str'\n---\n";
    $str = "1  \n";        $str =~ s/(?=\r\n|\n|\r|$)/|/g;  print "'$str'\n---\n";
    $str = "2  \n\n";      $str =~ s/(?=\r\n|\n|\r|$)/|/g;  print "'$str'\n---\n";
    $str = "3  \n\n\n";    $str =~ s/(?=\r\n|\n|\r|$)/|/g;  print "'$str'\n---\n";
    $str = "4  \n\n\n\n";  $str =~ s/(?=\r\n|\n|\r|$)/|/g;  print "'$str'\n\n";

 # /(?=\r\n|\n|\r|$)/mg   Multi-line mode:
 # Exact same output.

 print "=== /(?=\\r\\n|\\n|\\r|\$)/mg ==============\n";
    $str = "0  ";          $str =~ s/(?=\r\n|\n|\r|$)/|/mg;  print "'$str'\n---\n";
    $str = "1  \n";        $str =~ s/(?=\r\n|\n|\r|$)/|/mg;  print "'$str'\n---\n";
    $str = "2  \n\n";      $str =~ s/(?=\r\n|\n|\r|$)/|/mg;  print "'$str'\n---\n";
    $str = "3  \n\n\n";    $str =~ s/(?=\r\n|\n|\r|$)/|/mg;  print "'$str'\n---\n";
    $str = "4  \n\n\n\n";  $str =~ s/(?=\r\n|\n|\r|$)/|/mg;  print "'$str'\n\n";

Output >>

 === /$/g ===============
 '0  |'
 ---
 '1  |
 |'
 ---
 '2
 |
 |'
 ---
 '3

 |
 |'
 ---
 '4


 |
 |'

 ===  /$/mg ===============
 '0  |'
 ---
 '1  |
 |'
 ---
 '2  |
 |
 |'
 ---
 '3  |
 |
 |
 |'
 ---
 '4  |
 |
 |
 |
 |'

 === /(?=\r\n|\n|\r|$)/g ==============
 '0  |'
 ---
 '1  |
 |'
 ---
 '2  |
 |
 |'
 ---
 '3  |
 |
 |
 |'
 ---
 '4  |
 |
 |
 |
 |'

 === /(?=\r\n|\n|\r|$)/mg ==============
 '0  |'
 ---
 '1  |
 |'
 ---
 '2  |
 |
 |'
 ---
 '3  |
 |
 |
 |'
 ---
 '4  |
 |
 |
 |
 |'