Broken if exchanging in the wrong order

[tommcdo]

If pasting the first set text over the second set text causes the first text's position in the buffer to change (line or column), things will be messed up.

Potential solution: Choose the text that appears later in the file as the second set text.

[tommcdo]

Workaround for now: When using the plugin, always define the first word as the one earlier in the file.