From: Konstantinos Koukas <contact@koukas.org>

Fixes: https://todo.sr.ht/~migadu/alps/165
---
 themes/alps/message.html | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/themes/alps/message.html b/themes/alps/message.html
index ee5aa02..93cc5c9 100644
--- a/themes/alps/message.html
+++ b/themes/alps/message.html
@@ -185,6 +185,7 @@
       {{ $text := .Message.TextPart }}
       <div class="tabs">
         {{/* https://github.com/golang/go/issues/31103 */}}
+        {{ if $text }}
         <a
           href="?part={{$text.PathString}}"
           {{ if eq $text.PathString .Part.PathString }}
@@ -197,7 +198,7 @@
         Plain text
         {{ end }}
         </a>
-        {{ if and $html $text }}
+        {{ if $html }}
         {{ if ne $html.PathString $text.PathString }}
         <a
           href="?part={{$html.PathString}}"
@@ -207,6 +208,7 @@
         >HTML</a>
         {{ end }}
         {{ end }}
+        {{ end }}
         <a href="{{.Message.URL}}/raw?plain=1">Raw email</a>
       </div>
 
-- 
2.38.5

alps/patches/.build.yml: SUCCESS in 1m15s

[themes/alps: handle messages without text parts][0] from [~koukas][1]

[0]: https://lists.sr.ht/~migadu/alps-devel/patches/43251
[1]: contact@koukas.org

✓ #1034563 SUCCESS alps/patches/.build.yml https://builds.sr.ht/~migadu/job/1034563

Hm, what if an e-mail has only an HTML part without a text part?

> Hm, what if an e-mail has only an HTML part without a text part?

In that case TextPart and HTMLPart are the same.
TextPart() returns either a text/plain or a text/html part, and plain text takes precedence:
https://git.sr.ht/~migadu/alps/tree/master/item/plugins/base/imap.go#L226-234

The first tab points to the HTML view and the condition for the second one is false:
https://git.sr.ht/~migadu/alps/tree/master/item/themes/alps/message.html#L201

Perhaps this logic can be re-written as a loop over message parts as in the SourceHut theme:
https://git.sr.ht/~migadu/alps/tree/master/item/themes/sourcehut/message.html#L49