From ddce6f1a1476ae7cce5c4c09065e34d9671162a0 Mon Sep 17 00:00:00 2001
From: Arun Isaac
Date: Mon, 26 Aug 2019 00:07:28 +0530
Subject: Optionally, generate index filenames without extensions.

* ennu.el (ennu-index-filename): Make extension argument optional. If
extension is nil, do not add extension to generated filename.
(ennu-publish-index): Use links without extension for pagination.
---
 ennu.el | 22 ++++++++++------------
 1 file changed, 10 insertions(+), 12 deletions(-)

diff --git a/ennu.el b/ennu.el
index 5d37a71..4620ef8 100644
--- a/ennu.el
+++ b/ennu.el
@@ -75,17 +75,15 @@ last form in BODY."
                tongue
                (file-name-extension filename)))))
 
-(defun ennu-index-filename (filename-prefix tongue extension &optional page-number)
-  (ennu-add-tongue-suffix
-   (if page-number
-       (format "%s-%s.%s"
-               (file-name-nondirectory filename-prefix)
-               page-number
-               extension)
-     (format "%s.%s" (filename-nondirectory filename-prefix) extension))
-   tongue))
-
 (defun ennu-publish-index (filename-prefix tongue title subtitle posts-per-page posts)
+(defun ennu-index-filename (filename-prefix tongue &optional extension page-number)
+  (let ((extension (if extension (concat "." extension) "")))
+    (ennu-add-tongue-suffix
+     (if page-number
+         (format "%s-%s%s" (file-name-nondirectory filename-prefix) page-number extension)
+       (concat (file-name-nondirectory filename-prefix) extension))
+     tongue)))
+
   (let* ((number-of-pages (ceiling (length posts) posts-per-page))
          (page-numbers (number-sequence 1 number-of-pages)))
     `(,posts
@@ -121,10 +119,10 @@ last form in BODY."
                       posts)
               (unless (= page-number 1)
                 (insert (format "[[./%s][Newer posts]]\n"
-                                (ennu-index-filename filename-prefix tongue "org" (1- page-number)))))
+                                (ennu-index-filename filename-prefix tongue nil (1- page-number)))))
               (unless (= page-number number-of-pages)
                 (insert (format "[[./%s][Older posts]]\n"
-                                (ennu-index-filename filename-prefix tongue "org" (1+ page-number)))))
+                                (ennu-index-filename filename-prefix tongue nil (1+ page-number)))))
               (org-export-to-file 'ennu-html output-file)))
           (seq-partition posts posts-per-page)
           page-numbers
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