From f4ef652a4165fefe4b587882cc75d1e24971ef1f Mon Sep 17 00:00:00 2001
From: Aner Lucero <4rgento@gmail.com>
Date: Tue, 29 Jun 2021 08:49:36 -0300
Subject: Remove duplicated alt text in HTML output.

---
 src/Text/Pandoc/Writers/HTML.hs | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

(limited to 'src/Text')

diff --git a/src/Text/Pandoc/Writers/HTML.hs b/src/Text/Pandoc/Writers/HTML.hs
index b99b1a413..df01fc35f 100644
--- a/src/Text/Pandoc/Writers/HTML.hs
+++ b/src/Text/Pandoc/Writers/HTML.hs
@@ -1433,7 +1433,7 @@ inlineToHtml opts inline = do
                         return $ if T.null tit
                                     then link'
                                     else link' ! A.title (toValue tit)
-    (Image attr txt (s,tit)) -> do
+    (Image attr@(_, _, attrList) txt (s, tit)) -> do
                         let alternate = stringify txt
                         slideVariant <- gets stSlideVariant
                         let isReveal = slideVariant == RevealJsSlides
@@ -1446,7 +1446,8 @@ inlineToHtml opts inline = do
                               [A.title $ toValue tit | not (T.null tit)] ++
                               attrs
                             imageTag = (if html5 then H5.img else H.img
-                              , [A.alt $ toValue alternate | not (null txt)] )
+                              , [A.alt $ toValue alternate | not (null txt) &&
+                                  isNothing (lookup "alt" attrList)] )
                             mediaTag tg fallbackTxt =
                               let linkTxt = if null txt
                                             then fallbackTxt
-- 
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