Denote (denote.el)

An entire emacs package that boils down to naming files like this:

DATE==SIGNATURE--TITLE__KEYWORDS.EXTENSION

The denote-prompts can be configured in such ways to yield the following file name permutations:

DATE.EXT
DATE--TITLE.EXT
DATE__KEYWORDS.EXT
DATE==SIGNATURE.EXT
DATE==SIGNATURE--TITLE.EXT
DATE==SIGNATURE--TITLE__KEYWORDS.EXT
DATE==SIGNATURE__KEYWORDS.EXT

The tokens "=", =__ and -- are interpreted by Denote and should appear only once.

The dot character is not allowed in a note’s file name, except to indicate the file type extension. Denote recognises two extensions for encrypted files, like .txt.gpg.

Series is a user-defined field, but the example given uses NLS/Augment paths (1, 1a, 1a3, etc) and suggests using it for related notes or to track diversions in a zettelfolgen system.