Name of the rivers as boundaries

[angoca]

I see the Brazilian validator checks the river's name to see if it starts with "Rio" as in Portuguese. However, we have a similar validator in Colombia to check if the name starts with "Río" (with the accent), which is the correct spelling in Spanish.

/* https://overpass-turbo.eu/s/sZz */
way[waterway =~ /^(river|stream)$/][name][name !~ /^(?U)(Água|Arroio|Cabeceira|Córrego|Furo|Grota|Igarapé|Lajeado|Paraná|Restinga|Riacho|Ribeirão|Rio|Sanga)\b/][inside("BR")],
way[waterway =~ /^(river|stream)$/][alt_name][alt_name !~ /^(?U)(Água|Arroio|Cabeceira|Córrego|Furo|Grota|Igarapé|Lajeado|Paraná|Restinga|Riacho|Ribeirão|Rio|Sanga)\b/][inside("BR")] {
    throwWarning: tr("{0} com possível nome errado/incompleto", tag(waterway));
    group: tr("Brasil - Verificar");
}

I suppose you have this issue in all countries with rivers as boundaries.

We (LatAm) should define a name rule for rivers and adjust our validators to comply with this, preventing the changes of our rivers multiple times. I start proposing something like: Rio Apaporis - Río Apaporis (Portuguese before Spanish, because alphabetically it is P before S), with space-dash-space. What do you think?

Examples of this issue:

• https://osmose.openstreetmap.fr/map/#level=3&item=9018&zoom=17&lat=-0.9571624&lon=-69.4720143&level=3&tags=&fixable=&issue_uuid=0b3dc14e-4fd6-4df8-4b92-a6f0229bb2ee
• https://osmose.openstreetmap.fr/map/#level=3&item=9018&zoom=17&lat=0.5635981&lon=-70.0441343&level=3&tags=&fixable=&issue_uuid=63318080-bff9-1833-d26f-d950963b3fca
• https://osmose.openstreetmap.fr/map/#level=3&item=9018&zoom=17&lat=-0.8392735&lon=-69.5720582&level=3&tags=&fixable=&issue_uuid=8cc7ea43-61fd-6d06-565b-a0fdcf363288
• https://osmose.openstreetmap.fr/map/#level=3&item=9018&zoom=17&lat=-1.5441146&lon=-69.4422443&level=3&tags=&fixable=&issue_uuid=847547d3-7d53-11eb-6c75-211eb60fc930

[angoca]

Another idea could be 'Río Apaporis - Rio Apaporis' because the rivers begins in Colombia, and then it goes to Brasil.

[angoca]

I see a similar issue in the name tag, in Switzerland: https://www.openstreetmap.org/relation/51701 It has the name in its 4 local languages (but I don't know why this order): Schweiz/Suisse/Svizzera/Svizra