From f12f3e6aac4fa0a8950868f90cb9074f07a08a17 Mon Sep 17 00:00:00 2001
From: Ivan Necas <necasik@gmail.com>
Date: Thu, 22 Aug 2024 15:01:31 +0200
Subject: [PATCH] fix: sed line number incorrect

The original code for prefixing line numbers was not working, as
it was adding less extra space than needed:

```
seq 3 | sed = | sed 'N; s/^/   /; s/ *\(.\{6,\}\)\n/\1/'
   1
1
   2
2
   3
3
```

Adding few more spaces fixes the issue:

```
seq 3 | sed = | sed 'N; s/^/     /; s/ *\(.\{6\}\)\n/\1 /'
     1 1
     2 2
     3 3
```

I've also changed `\{6,\}` to `\{6\}`, as the extra `,` shouln't be
needed and might be confusing.
---
 source/_posts/sed.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/source/_posts/sed.md b/source/_posts/sed.md
index 1aee1db7..4f4183a0 100644
--- a/source/_posts/sed.md
+++ b/source/_posts/sed.md
@@ -240,7 +240,7 @@ $ sed = file.txt | sed 'N;s/\n/\t/'
 Number line of a file (number on left, right-aligned)
 
 ```shell script
-$ sed = file.txt | sed 'N; s/^/   /; s/ *\(.\{6,\}\)\n/\1  /'
+$ sed = file.txt | sed 'N; s/^/     /; s/ *\(.\{6\}\)\n/\1  /'
 ```
 
 Number line of file, but only print numbers if line is not blank