citefind: a note that remarks first and cites second

The bar a guessed title has to clear was waived when the entry also gave up
a container, on the reasoning that a container vouches for the rest of the
reading. Auditing the corpus rather than the reference chapters showed that
is wrong, and wrong on the commonest note there is:

    As Lewis White Beck has rightly put it. See his Early German
    Philosophy (Cambridge, Mass., 1969), p. 439.

The remark opens, the citation follows, and the second sentence becomes the
container — so the first was stored as the work and the book named in it was
lost. Neither a siglum nor a remark is the name of a work now, whatever else
came off the entry.

Measured where these notes actually live, which is flagged body chunks
rather than bibliography chapters: on the corpus the class ran at 1.43% of
rows naming a work. The cost is 46 rows in 34,359 on the reference holdout,
where the share naming an author rises from 88.1% to 88.2%.

crates/citefind/README.md

@@ -235,10 +235,15 @@ Society since 1900` survives, which is why the imprint is asked for narrowly
 based himself principally on the Bible` and `Dewey remarks that we experience
 most things as temporal` are what a page of endnotes is mostly made of. A
 title read off markup is taken at its word; a title guessed at by cutting the
-entry at its sentence stops is not, and where the entry gave up nothing else
+entry at its sentence stops is not, and where the entry named no author and
-— no author, no identifier, no container — that guess has to be a noun
+no identifier, that guess has to be a noun phrase. A finite verb is what
-phrase. A finite verb is what separates the remark from `Quaestiones
+separates the remark from `Quaestiones Parisienses`.
-Parisienses`.
+
+The commonest note of all remarks first and cites second — `As Lewis White
+Beck has rightly put it. See his Early German Philosophy (Cambridge, Mass.,
+1969), p. 439.` — so what follows the remark is read as the container and
+would otherwise vouch for it. It does not: reading that entry as a work with
+a container stored the remark and lost the book.
 
 **Take a siglum for a work.** `H, 272`, `FR,120-122`, `GNO`. The key that
 expands the abbreviation is a page of its own that the entry does not carry,

crates/citefind/src/parse.rs

@@ -624,10 +624,14 @@ pub fn one(text: &str, marker: Option<&str>) -> Option<Reference> {
     // than no answer, because it is stored and looks settled.
     if guessed && out.authors.is_empty() && out.ids.is_empty() {
         let refused = out.title.as_deref().is_some_and(|title| {
-            // A siglum is not the name of a work whatever else the entry
+            // Neither a siglum nor a remark is the name of a work, whatever
-            // gave up; a remark is only recognisable as one when nothing
+            // else came off the entry. A container does not vouch for the
-            // else was read, because a container vouches for the rest.
+            // title here: the commonest note of all remarks first and cites
-            SIGLUM.is_match(title) || (out.container.is_none() && PREDICATE.is_match(title))
+            // second — `As Lewis White Beck has rightly put it. See his
+            // Early German Philosophy (Cambridge, Mass., 1969), p. 439.` —
+            // and reading that as a work with a container stored the remark
+            // and lost the book.
+            SIGLUM.is_match(title) || PREDICATE.is_match(title)
         });
         if refused {
             out.title = None;
@@ -2235,6 +2239,21 @@ mod tests {
         }
     }
 
+    #[test]
+    fn a_note_that_remarks_first_and_cites_second_keeps_neither_as_a_title() {
+        // The remark opened the note and the citation followed it, so the
+        // second sentence became a container and vouched for the first.
+        // Nothing in this names a work the record can carry.
+        let read = one(
+            "As Lewis White Beck has rightly put it. See his Early German \
+             Philosophy (Cambridge, Mass., 1969), p. 439.",
+            None,
+        )
+        .expect("a record");
+        assert_eq!(read.title, None);
+        assert_eq!(read.pages.as_deref(), Some("439"));
+    }
+
     #[test]
     fn a_title_the_entry_marked_up_is_taken_at_its_word() {
         // The other side of the same bar, and why it is drawn at the guess