fix(dossier): a tag can be preceded by a -

app/models/concerns/tags_substitution_concern.rb

@@ -32,8 +32,16 @@ module TagsSubstitutionConcern
       lit('--')
     end
 
+    define_combinator :tag_text_first_char do
+      any_char.that_fail(lit('-') | tag_delimiter | eol)
+    end
+
+    define_combinator :tag_text_char do
+      any_char.that_fail(tag_delimiter | eol)
+    end
+
     define_combinator :tag_text do
-      join(many(any_char.that_fail(tag_delimiter | eol))).fmap do |str|
+      join(single(tag_text_first_char) + many(tag_text_char)).fmap do |str|
         str.force_encoding('utf-8').encode
       end
     end

spec/models/concern/tags_substitution_concern_spec.rb

@@ -509,5 +509,15 @@ describe TagsSubstitutionConcern, type: :model do
         { text: " encore du text\n" + "---\n" + " encore du text" }
       ])
     end
+
+    it 'allow for - before tag' do
+      tokens = TagsSubstitutionConcern::TagsParser.parse("hello --yolo-- world ---numéro-du - dossier--")
+      expect(tokens).to eq([
+        { text: "hello " },
+        { tag: "yolo" },
+        { text: " world -" },
+        { tag: "numéro-du - dossier" }
+      ])
+    end
   end
 end