Don't repeat labels

docs/images/pandoc-numbering-sample.html

@@ -34,7 +34,7 @@
 class="pandoc-numbering-entry theorem">Theorem 2.2</span></a></li>
 </ul>
 <h1 id="this-is-the-first-section">This is the first section</h1>
-<p><span id="exercise:1"></span><span id="exercise:1"
+<p><span></span><span id="exercise:1"
 class="pandoc-numbering-text exercise"><strong>Exercise
 1</strong></span></p>
 <p>This is the first exercise. Have also a look at the <a

docs/images/pandoc-numbering-sample.tex

@@ -2,75 +2,72 @@
 \listofexercise
 \listoftheorem}
 
-\hypertarget{this-is-the-first-section}{%
-\section{This is the first section}\label{this-is-the-first-section}}
+\section{This is the first section}\label{this-is-the-first-section}
 
-\phantomsection\addcontentsline{exercise}{exercise}{\protect\numberline {1}{\ignorespaces {}}}\protect\hypertarget{exercise:1}{}{}\protect\hypertarget{exercise:1}{}{\label{exercise:1}\label{exercise:1}\textbf{Exercise
+\phantomsection\addcontentsline{exercise}{exercise}{\protect\numberline {1}{\ignorespaces {}}}{}\phantomsection\label{exercise:1}{\textbf{Exercise
 1}}
 
 This is the first exercise. Have also a look at the
-\protect\hyperlink{theorem:first}{{Theorem 1.1 (Needed for the
-\protect\hyperlink{exercise:second}{second exercise})}}, the
-\protect\hyperlink{exercise:second}{{exercise 2}} and the
-\protect\hyperlink{exercise:last}{{exercise 3}}.
+\hyperref[theorem:first]{{Theorem 1.1 (Needed for the
+\hyperref[exercise:second]{second exercise})}}, the
+\hyperref[exercise:second]{{exercise 2}} and the
+\hyperref[exercise:last]{{exercise 3}}.
 
 \begin{quote}
-\phantomsection\addcontentsline{theorem}{theorem}{\protect\numberline {1.1}{\ignorespaces {Needed for the \protect\hyperlink{exercise:second}{second exercise}}}}\protect\hypertarget{theorem:this-is-the-first-section.needed-for-the-second-exercise}{}{}\protect\hypertarget{theorem:first}{}{\label{theorem:first}\label{theorem:this-is-the-first-section.needed-for-the-second-exercise}\emph{Theorem
-1.1: Needed for the \protect\hyperlink{exercise:second}{second
-exercise}}}
+\phantomsection\addcontentsline{theorem}{theorem}{\protect\numberline {1.1}{\ignorespaces {Needed for the \hyperref[exercise:second]{second exercise}}}}\phantomsection\label{theorem:this-is-the-first-section.needed-for-the-second-exercise}{}\phantomsection\label{theorem:first}{\emph{Theorem
+1.1: Needed for the \hyperref[exercise:second]{second exercise}}}
 
 This is a the first theorem. Look at the
-\protect\hyperlink{exercise:second}{exercise}.
+\hyperref[exercise:second]{exercise}.
 \end{quote}
 
-\phantomsection\addcontentsline{exercise}{exercise}{\protect\numberline {2}{\ignorespaces {}}}\protect\hypertarget{exercise:this-is-the-second-exercise}{}{}\protect\hypertarget{exercise:second}{}{\label{exercise:second}\label{exercise:this-is-the-second-exercise}\textbf{Exercise
+\phantomsection\addcontentsline{exercise}{exercise}{\protect\numberline {2}{\ignorespaces {}}}\phantomsection\label{exercise:this-is-the-second-exercise}{}\phantomsection\label{exercise:second}{\textbf{Exercise
 2} \emph{(This is the second exercise)}}
 
-Use \protect\hyperlink{theorem:first}{\emph{theorem 1.1} page
+Use \hyperref[theorem:first]{\emph{theorem 1.1} page
 \pageref{theorem:first}}
 
 \begin{description}
 \tightlist
-\item[\phantomsection\addcontentsline{example}{example}{\protect\numberline {1.1}{\ignorespaces {Example}}}\protect\hypertarget{example:this-is-the-first-section.1}{}{}\protect\hypertarget{example:1.1}{}{\label{example:1.1}\label{example:this-is-the-first-section.1}\textbf{Example
+\item[\phantomsection\addcontentsline{example}{example}{\protect\numberline {1.1}{\ignorespaces {Example}}}\phantomsection\label{example:this-is-the-first-section.1}{}\phantomsection\label{example:1.1}{\textbf{Example
 1}}]
 This is the first example of the first section
-\item[\phantomsection\addcontentsline{example}{example}{\protect\numberline {1.2}{\ignorespaces {Example}}}\protect\hypertarget{example:this-is-the-first-section.2}{}{}\protect\hypertarget{example:1.2}{}{\label{example:1.2}\label{example:this-is-the-first-section.2}\textbf{Example
+\item[\phantomsection\addcontentsline{example}{example}{\protect\numberline {1.2}{\ignorespaces {Example}}}\phantomsection\label{example:this-is-the-first-section.2}{}\phantomsection\label{example:1.2}{\textbf{Example
 2}}]
 This is the second example of the first section
 \end{description}
 
-\hypertarget{this-is-the-second-section}{%
-\section{This is the second section}\label{this-is-the-second-section}}
+\section{This is the second section}\label{this-is-the-second-section}
 
 \begin{description}
 \tightlist
-\item[\phantomsection\addcontentsline{example}{example}{\protect\numberline {2.1}{\ignorespaces {Example}}}\protect\hypertarget{example:this-is-the-second-section.1}{}{}\protect\hypertarget{example:2.1}{}{\label{example:2.1}\label{example:this-is-the-second-section.1}\textbf{Example
+\item[\phantomsection\addcontentsline{example}{example}{\protect\numberline {2.1}{\ignorespaces {Example}}}\phantomsection\label{example:this-is-the-second-section.1}{}\phantomsection\label{example:2.1}{\textbf{Example
 1}}]
 This is the first example of the second section
 \end{description}
 
 \begin{quote}
-\phantomsection\addcontentsline{theorem}{theorem}{\protect\numberline {2.1}{\ignorespaces {\(a=b\)}}}\protect\hypertarget{theorem:this-is-the-second-section.a-b}{}{}\protect\hypertarget{theorem:2.1}{}{\label{theorem:2.1}\label{theorem:this-is-the-second-section.a-b}\emph{Theorem
+\phantomsection\addcontentsline{theorem}{theorem}{\protect\numberline {2.1}{\ignorespaces {\(a=b\)}}}\phantomsection\label{theorem:this-is-the-second-section.a-b}{}\phantomsection\label{theorem:2.1}{\emph{Theorem
 2.1: \(a=b\)}}
 
-Another theorem. Can be useful in \protect\hyperlink{exercise:1}{}
+Another theorem. Can be useful in \hyperref[exercise:1]{}
 \end{quote}
 
 \begin{quote}
-\phantomsection\addcontentsline{theorem}{theorem}{\protect\numberline {2.2}{\ignorespaces {Theorem}}}\protect\hypertarget{theorem:this-is-the-second-section.2}{}{}\protect\hypertarget{theorem:2.2}{}{\label{theorem:2.2}\label{theorem:this-is-the-second-section.2}\emph{Theorem
+\phantomsection\addcontentsline{theorem}{theorem}{\protect\numberline {2.2}{\ignorespaces {Theorem}}}\phantomsection\label{theorem:this-is-the-second-section.2}{}\phantomsection\label{theorem:2.2}{\emph{Theorem
 2.2}}
 
 A last theorem.
 \end{quote}
 
 \begin{description}
 \tightlist
-\item[\phantomsection\addcontentsline{example}{example}{\protect\numberline {2.2}{\ignorespaces {Example}}}\protect\hypertarget{example:this-is-the-second-section.2}{}{}\protect\hypertarget{example:2.2}{}{\label{example:2.2}\label{example:this-is-the-second-section.2}\textbf{Example
+\item[\phantomsection\addcontentsline{example}{example}{\protect\numberline {2.2}{\ignorespaces {Example}}}\phantomsection\label{example:this-is-the-second-section.2}{}\phantomsection\label{example:2.2}{\textbf{Example
 2}}]
 This is the second example of the second section
 \end{description}
 
-\phantomsection\addcontentsline{exercise}{exercise}{\protect\numberline {3}{\ignorespaces {}}}\protect\hypertarget{exercise:3}{}{}\protect\hypertarget{exercise:last}{}{\label{exercise:last}\label{exercise:3}\textbf{Exercise
+\phantomsection\addcontentsline{exercise}{exercise}{\protect\numberline {3}{\ignorespaces {}}}\phantomsection\label{exercise:3}{}\phantomsection\label{exercise:last}{\textbf{Exercise
 3}}
 
 This is the third exercise.

pandoc_numbering.py

@@ -449,12 +449,26 @@ def _compute_global_number(self):
     def _compute_data(self):
         # pylint: disable=too-many-statements,no-member
         classes = self._doc.defined[self._basic_category]["classes"]
-        self._set_content(
-            [
-                Span(identifier=self._alias),
-                Span(identifier=self._tag, classes=["pandoc-numbering-text"] + classes),
-            ]
-        )
+        if self._alias == self._tag:
+            self._set_content(
+                [
+                    Span(),
+                    Span(
+                        identifier=self._tag,
+                        classes=["pandoc-numbering-text"] + classes,
+                    ),
+                ]
+            )
+        else:
+            self._set_content(
+                [
+                    Span(identifier=self._alias),
+                    Span(
+                        identifier=self._tag,
+                        classes=["pandoc-numbering-text"] + classes,
+                    ),
+                ]
+            )
         self._link.classes = self._link.classes + classes
         self._entry.classes = self._entry.classes + classes
 
@@ -532,13 +546,6 @@ def _compute_data(self):
 
         # Finalize the content
         if self._doc.format in {"tex", "latex"}:
-            self._get_content()[1].content.insert(
-                0, RawInline("\\label{" + self._alias + "}", "tex")
-            )
-            self._get_content()[1].content.insert(
-                0, RawInline("\\label{" + self._tag + "}", "tex")
-            )
-
             latex_category = re.sub("[^a-z]+", "", self._basic_category)
             latex = (
                 "\\phantomsection"