Derive Org heading based internal link refs using org-hugo-slug

ox-hugo.el

@@ -1104,20 +1104,23 @@ and rewrite link paths to make blogging more seamless."
              (if contents
                  (format "[%s](%s)" contents path)
                (format "<%s>" path))))
-          (`headline
-           (format
-            "[%s](#%s)"
-            ;; Description
-            (cond ((org-string-nw-p contents))
-                  ((org-export-numbered-headline-p destination info)
-                   (mapconcat #'number-to-string
-                              (org-export-get-headline-number destination info)
-                              "."))
-                  (t (org-export-data (org-element-property :title destination)
-                                      info)))
-            ;; Reference
-            (or (org-element-property :CUSTOM_ID destination)
-                (org-export-get-reference destination info))))
+          (`headline                 ;Links of type [[* Some heading]]
+           (let ((title (org-export-data (org-element-property :title destination) info)))
+             ;; (message "[ox-hugo-link DBG] headline title: %s" title)
+             (format
+              "[%s](#%s)"
+              ;; Description
+              (cond ((org-string-nw-p contents))
+                    ((org-export-numbered-headline-p destination info)
+                     (mapconcat #'number-to-string
+                                (org-export-get-headline-number destination info)
+                                "."))
+                    (t title))
+              ;; Reference
+              (or (org-element-property :CUSTOM_ID destination)
+                  (org-hugo-slug title)
+                  ;; (org-export-get-reference destination info)
+                  ))))
           (_
            (let ((description
                   (or (org-string-nw-p contents)

test/site/content-org/all-posts.org

@@ -1434,6 +1434,33 @@ attribute must apply *only* to the link, and not to the image.
 annotation. So the behavior will depend on the browser (typically an
 external link will open in a new tab automatically).
 ** Within the same post (Internal links)                     :internal_links:
+*** Link to headings by name                                   :toc:headings:
+:PROPERTIES:
+:EXPORT_FILE_NAME: link-to-headings-by-name
+:EXPORT_OPTIONS: num:t toc:t
+:END:
+**** Alpha 101
+:PROPERTIES:
+:UNNUMBERED: t
+:END:
+- Link (with description) to a heading with section number: [[* Beta 102][Link to
+ /Beta 102/ heading]]
+- Link (no description) to a heading without section number: [[* Zeta
+  103]]
+**** Beta 102
+- Link (with description) to a heading without section number: [[* Alpha 101][Link to
+ /Alpha 101/ heading]]
+***** Gamma 102.1
+****** Delta 102.1.1
+****** Epsilon 102.1.2
+**** Zeta 103
+:PROPERTIES:
+:UNNUMBERED: t
+:END:
+***** Links (no descriptions) to headings with section numbers
+- Section [[* Gamma 102.1]]
+- Section [[* Delta 102.1.1]]
+- Section [[* Epsilon 102.1.2]]
 *** Link to a heading CUSTOM_ID
 :PROPERTIES:
 :EXPORT_FILE_NAME: link-heading-custom-id

test/site/content/posts/link-to-headings-by-name.md

@@ -0,0 +1,56 @@
++++
+title = "Link to headings by name"
+tags = ["links", "internal-links", "toc", "headings"]
+draft = false
++++
+
+<style>
+  .ox-hugo-toc ul {
+    list-style: none;
+  }
+</style>
+<div class="ox-hugo-toc toc">
+<div></div>
+
+## Table of Contents
+
+- [Alpha 101](#alpha-101)
+- <span class="section-num">1</span> [Beta 102](#beta-102)
+    - <span class="section-num">1.1</span> [Gamma 102.1](#gamma-102-dot-1)
+        - <span class="section-num">1.1.1</span> [Delta 102.1.1](#delta-102-dot-1-dot-1)
+        - <span class="section-num">1.1.2</span> [Epsilon 102.1.2](#epsilon-102-dot-1-dot-2)
+- [Zeta 103](#zeta-103)
+    - [Links (no descriptions) to headings with section numbers](#links--no-descriptions--to-headings-with-section-numbers)
+</div>
+
+
+## Alpha 101 {#alpha-101}
+
+-   Link (with description) to a heading with section number: [Link to
+    _Beta 102_ heading](#beta-102)
+-   Link (no description) to a heading without section number: [Zeta 103](#zeta-103)
+
+
+## <span class="section-num">1</span> Beta 102 {#beta-102}
+
+-   Link (with description) to a heading without section number: [Link to
+    _Alpha 101_ heading](#alpha-101)
+
+
+### <span class="section-num">1.1</span> Gamma 102.1 {#gamma-102-dot-1}
+
+
+#### <span class="section-num">1.1.1</span> Delta 102.1.1 {#delta-102-dot-1-dot-1}
+
+
+#### <span class="section-num">1.1.2</span> Epsilon 102.1.2 {#epsilon-102-dot-1-dot-2}
+
+
+## Zeta 103 {#zeta-103}
+
+
+### Links (no descriptions) to headings with section numbers {#links--no-descriptions--to-headings-with-section-numbers}
+
+-   Section [1.1](#gamma-102-dot-1)
+-   Section [1.1.1](#delta-102-dot-1-dot-1)
+-   Section [1.1.2](#epsilon-102-dot-1-dot-2)