Reverse A Group Of Lines
The following command can be used to reverse the order of all lines in a file by doing a global move on all lines that match the beginning of line character starting at the theoretical 0th character:
Reversing a range of lines is a little more work. Just as the previous example needs to be anchored against the 0th character, a specific range of lines needs to be anchored at the line just before the range. Thus reversing the lines 5 to 10 requires being anchored at line 4, like so:
See :h 12.4 for more details on how this works.
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