remove blank lines and spaces from plain parts (#280)

CHANGELOG.md

@@ -14,6 +14,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Vim plugin get focused msg id [#268]
 - Nix run issue [#272]
 - Range not displayed when fetch fails [#276]
+- Blank lines and spaces in `text/plain` parts [#280]
 
 ### Removed
 
@@ -372,3 +373,4 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 [#272]: https://github.com/soywod/himalaya/issues/272
 [#273]: https://github.com/soywod/himalaya/issues/273
 [#276]: https://github.com/soywod/himalaya/issues/276
+[#280]: https://github.com/soywod/himalaya/issues/280

src/domain/msg/msg_entity.rs

@@ -106,15 +106,21 @@ impl Msg {
                 .replace_all(&sanitized_html, " ")
                 .to_string();
             // Merge new line chars
-            let sanitized_html = Regex::new(r"(\r?\n ?){2,}")
+            let sanitized_html = Regex::new(r"(\r?\n *){2,}")
                 .unwrap()
                 .replace_all(&sanitized_html, "\n\n")
                 .to_string();
             // Decode HTML entities
             let sanitized_html = html_escape::decode_html_entities(&sanitized_html).to_string();
+
             sanitized_html
         } else {
-            plain
+            let sanitized_plain = Regex::new(r"(\r?\n *){2,}")
+                .unwrap()
+                .replace_all(&plain, "\n\n")
+                .to_string();
+
+            sanitized_plain
         }
     }