Fix handling file names with periods before the file extension.

docker/organic_test/Dockerfile

@@ -88,7 +88,7 @@ ARG DOOMEMACS_PATH=/foreign_documents/doomemacs
 ARG DOOMEMACS_REPO=https://github.com/doomemacs/doomemacs.git
 RUN mkdir -p $DOOMEMACS_PATH && git -C $DOOMEMACS_PATH init --initial-branch=main && git -C $DOOMEMACS_PATH remote add origin $DOOMEMACS_REPO && git -C $DOOMEMACS_PATH fetch origin $DOOMEMACS_VERSION && git -C $DOOMEMACS_PATH checkout FETCH_HEAD
 
-ARG WORG_VERSION=0c8d5679b536af450b61812246a3e02b8103f4b8
+ARG WORG_VERSION=ba6cda890f200d428a5d68e819eef15b5306055f
 ARG WORG_PATH=/foreign_documents/worg
 ARG WORG_REPO=https://git.sr.ht/~bzg/worg
 RUN mkdir -p $WORG_PATH && git -C $WORG_PATH init --initial-branch=main && git -C $WORG_PATH remote add origin $WORG_REPO && git -C $WORG_PATH fetch origin $WORG_VERSION && git -C $WORG_PATH checkout FETCH_HEAD

org_mode_samples/document/category_multiple.org

@@ -0,0 +1,5 @@
+#+CATEGORY: foo
+#+CATEGORY: bar
+#+begin_src text
+#+CATEGORY: baz
+#+end_src

src/parser/document.rs

@@ -83,7 +83,7 @@ pub fn parse_file_with_settings<'g, 's, P: AsRef<Path>>(
         let full_path = file_path.as_ref().canonicalize()?;
         if doc.category.is_none() {
             let category = full_path
-                .file_prefix()
+                .file_stem()
                 .expect("File should have a name.")
                 .to_str()
                 .expect("File name should be valid utf-8.");