facebookincubator
Feature request: match and replacement word highlighting within the replacement preview diff
At times, a line contains multiple matches.
Fastmod thus presents the line multiple times, once for each match and replacement within the line.
It can be difficult to see where exactly something is being replaced, especially when replacing matches in very long lines. (think minification test fixtures, but much shorter lines can also benefit from word highlighting)
A rather extreme example (pixellated, but the point should become obvious):
The individual match and replacement should be highlighted within the red and green lines.
This would be very helpful, even in a less extreme situation. If you're making a small change, like "Jns" to "Jus", those can take a bit to find within the diff, even with the line highlighted in different colors.
On the command line, fixing this could be as easy as bolding the found and replaced instance(s) on a given line.
Note that the accepted PR does character-level diff highlighting. Hopefully that's enough to close this issue.