"folder:" search modifier

[burgundy]

It seems the search modifier "folder:" (without quotations) can be used anywhere in the search terms. Either before or after the text string it qualifies.

If that is correct, why does the search shown below return results when the folder name and the file name are two separate things?

fred folder: filename:

[therube]

It looks like folder: takes precedence over filename: (so filename: is essentially ignored).

[froggie]

Is filename: a modifier?
file: is

file: folder: yields no results. Which makes sense.

[void]

Search Modifiers:
file: = match files only.
folder: = match folders only.

Search Functions:
filename: = match basename only (disables full path matching).
name: = match name part only (disables full path matching).

[Stamimail]

If someone asks:
Modifiers vs Functions