On 2023-07-31 08:45, Ihor Radchenko wrote:
If you are up to a job of adding this to `org-make-tags-matcher' and
not breaking things, you can try.
Depends a bit on the required collateral changes: Updating ORG-NEWS and
doc/org-guide.org should be no problem. Doing a naive grep-based search
I haven't found tests on `org-tags-view' or `org-make-tags-matcher', so
I hopefully wouldn't need to add anything new in that direction.
Finally, the first step probably would be to make that humongous regexp
in `org-make-tags-matcher' a bit more readable. What would you prefer?
`rx' or sth long the following lines (not checked for equality yet):
(re (concat
;; AND operator (OR is done by global splitting)
"^&?"
;; 1: exclusion and inclusion (the latter being
;; implicit)
"\\([-+:]\\)?"
;; 2: query expression
"\\("
;; regular expression matching tag
"{[^}]+}\\|"
;; LEVEL special property match (3: op, 4: level
;; value)
"LEVEL\\([<=>]\\{1,2\\}\\)\\([0-9]+\\)\\|"
;; property match
"\\(?:"
;; 5: property name (with backslash escaping minus)
"\\(\\(?:[[:alnum:]_]+\\(?:\\\\-\\)*\\)+\\)"
;; 6: property operator
"\\([<>=]\\{1,2\\}\\)"
;; 7: property value/operand
"\\("
;; regular expression
"{[^}]+}\\|"
;; string
"\"[^\"]*\"\\|"
;; number
"-?[.0-9]+\\(?:[eE][-+]?[0-9]+\\)?"
"\\)"
"\\)\\|"
;; tag match
org-tag-re
"\\)"))
> But we should really provide more
> readable match syntax, similar to org-ql; sooner or later.
Agreed on that if the new syntax will allow for equally succinct
queries. Plus a very cursory, doc-only review of org-ql hasn't
revealed to me how I'd do numeric property comparisons with it.
