[Patch]Validator should accept denomination=sufi instead of denomination=sufism

[bxl-forever]

Some mosques (amenity=place_of_worship + religion=islam) are linked to sufism.

The data validator accepts "denomination=sufism" but issues an "Unknown property value" warning for denomination=sufi.

It appears to be incoherent with the way other denominations are written.
For instance, sunnism is translated as "denomination=sunni" in OSM. Therefore, sufism should be "denomination=sufi". The wiki use this standard, I suggest we do the same for JOSM.

[GerdP]

Both sufi and sufism are unknown in JOSM, but sufism is not considered as a possible typo of sunni.
The message texts are

Warnings (1)
  Unknown property value - Value 'sufi' for key 'denomination' is unknown, maybe 'sunni' is meant? (1)
Other (1)
  Presets do not contain property value - Value 'sufism' for key 'denomination' not in presets. (1)

Not sure what to do. Taginfo reports 96 usages of denomination=sufi, only 3 for denomination=sufism

[GerdP]

patch to add sufi in those places where sunni is mentioned, both are islamic

[taylor.smock]

It looks like there may be some controversy over using sufi as a denomination.

See

• ​denomination=sufi has been used over 70 times, which makes it the 3rd most common after sunni and shia, so it should be documented here. (2020-07)
• ​Remove 'Sufi' as a denomination: it's not a doctrinal school like the others listed, rather it's a collection of spiritual methodologies. (2020-07)
• ​added sufi, some wikipedia links (2014)

From ​wikipedia:Sufism,

Existing in both Sunni and Shia Islam, Sufism is not a distinct sect, as is sometimes erroneously assumed, [...]

So it seems to me that sufism should be in a sub-key for the denomination, but I don't think there are any common sub-keys for denomination. Absent a subkey, it really should be used in conjunction with another muslim denomination (e.g. denomination=sunni;sufi).

Reasoning: I would presume that a sunni practitioner that does not use sufism would be OK with going to a location using sufism to practice the sunni ideology, but would not be OK going to a location using sufism to practice the shia ideology.
(Feel free to correct me if I'm wrong, I only know what the wikis have said).

[GerdP]

OK for me. If we don't add sufi to the presets we should add it to the ignoretags.cfg so that it doesn't suggest sunni.