Sentence

app/src/main/java/eu/faircode/email/FragmentCompose.java

@@ -739,11 +739,12 @@ public class FragmentCompose extends FragmentBase {
 
                 if (save != null)
                     try {
-                        if (lt == null && lt_sentence) {
+                        if (lt == null && lt_sentence &&
+                                Helper.isSentenceChar(text.charAt(save))) {
                             int start = save;
                             while (start > 0 &&
                                     text.charAt(start - 1) != '\n' &&
-                                    !Helper.isEndChar(text.charAt(start - 1)))
+                                    !Helper.isSentenceChar(text.charAt(start - 1)))
                                 start--;
                             while (start < save)
                                 if (Character.isWhitespace(text.charAt(start)))

app/src/main/java/eu/faircode/email/Helper.java

@@ -2528,10 +2528,13 @@ public class Helper {
     }
 
     static boolean isEndChar(char c) {
+        return (isSentenceChar(c) ||
+                c == ',' || c == ':' || c == ';');
+    }
+
+    static boolean isSentenceChar(char c) {
         return (c == '.' /* Latin */ ||
                 c == '。' /* Chinese */ ||
-                c == ',' ||
-                c == ':' || c == ';' ||
                 c == '?' || c == '!');
     }