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fix: sed line number incorrect #587

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fix: sed line number incorrect #587

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Commits on Aug 22, 2024

  1. 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.
    @iNecas
    iNecas committed Aug 22, 2024
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