latexcompletionplugin: store number of chars, not bytes

addons/latexunicodecompletion/autotests/testcompletiontable.cpp

@@ -23,7 +23,7 @@ private Q_SLOTS:
         for (int i = 0; i < n_completions - 1; ++i) {
             QVERIFY(std::char_traits<char16_t>::compare(completiontable[i].completion,
                                                         completiontable[i + 1].completion,
-                                                        std::min(completiontable[i].completion_strlen, completiontable[i + 1].completion_strlen))
+                                                        std::max(completiontable[i].completion_strlen, completiontable[i + 1].completion_strlen))
                     < 0);
         }
     }

addons/latexunicodecompletion/fetch_unicode_table.py

@@ -93,7 +93,9 @@ static constexpr Completion completiontable[] = {{
         for letter in completion[2][1:]:
             if letter not in wordchars:
                 completionchars.add(letter)
-        latexsymlength = len(completion[2].encode("utf-16")) - 2 # Python adds the BOM
+        latexsymlength = (len(completion[2].encode("utf-16")) - 2) // 2
+        # Python adds the BOM, thus -2. We need number of charachters, not bytes,
+        # thus //2
         latexsym = completion[2].replace("\\", "\\\\")
         if i > 0:
             out.write(",")