Not ideal fix for "way contains segment twice"

[naoliv]

Using the attached file, select the way tagged with FIXME=twice, validate and apply the fix for the "way contains segment twice" error. Note how the geometry of the streets are changed (some pieces also disappear).
For cases like this the fix seems harmful (it changes the geometry and doesn't fix the real problem)

Maybe something like #9513 should be applied?

[Don-vip]

Ouch, release blocker. I'll try to have a look tomorrow, unless someone else manages to fix it before :)

[simon04]

In 6693/josm:

see #9577 - Improve "Way contains segment twice" test (false-positives)

[simon04]

In my opinion, way 255733376 from attachment:twice.osm.bz2​ cannot be fixed automatically with reasonable efforts.

Based on #4959, the test was thought to remove duplicate way segments which are hard to spot/remove otherwise.

Since automatic fixes are hard to implement, maybe we should stick to a warning without a fix?

[simon04]

In 6694/josm:

see #9577 - Highlight duplicate way segments of "Way contains segment twice" test

[simon04]

In 6722/josm:

fix #9577 - Remove automatic fix for "Way contains segment twice"

Since we highlight duplicate segments since r6694, it seems easier/safer to let the user manually fix this (rare?) error.