smart guide path snapping in odd angles [FEATURE]

but it's a little hard to explain. I recorded my screen hoping it's more descriptive.

Screencast_from_2024-10-03_13-09-32

currently, the smart guide snapping (not sure how you call it), that helps users keep their path at a certain angle when holding ctrl, works great in predefined set of degrees. however, if a user chooses to use a different degree value (say, not 90 but 93) hey have to make their own guide manually. you can clearly see it in the video above, that if I want to extend this path to the left, I can either choose to snap to one of 2 close options or eyeball it, in case I want to retain my current angle.

in the last couple years Adobe Illustrator introduced a fix to this issue. while it doesn't always work great, in most cases Illustrator can predict the angle the path is at and help guide he user to extend/shorten their path along the same straight line. it's visualised with a different smart guide colour to notify the user of the odd angle. nevertheless, it helps the user keep their paths consistent as they intended.

it would be great to see the same feature in Inkscape 😄 I hope I could explain it clearly, I can go into further detail if necessary. anyways, thank you for your work!