[tidy] some more tidying

.clang-tidy

@@ -1,18 +1,24 @@
 ---
 # Enable ALL the things! Except not really
 # misc-non-private-member-variables-in-classes: the options don't do anything
-Checks: "*,\
-  -google-readability-todo,\
-  -altera-unroll-loops,\
-  -altera-id-dependent-backward-branch,\
-  -altera-struct-pack-align,\
-  -fuchsia-*,\
-  fuchsia-multiple-inheritance,\
-  -llvm-header-guard,\
-  -llvm-include-order,\
-  -llvmlibc-*,\
-  -modernize-use-trailing-return-type,\
-  -misc-non-private-member-variables-in-classes"
+Checks: >
+  *,
+  -google-readability-todo,
+  -altera-unroll-loops,
+  -altera-id-dependent-backward-branch,
+  -altera-struct-pack-align,
+  -fuchsia-*,
+  fuchsia-multiple-inheritance,
+  -llvm-header-guard,
+  -llvm-include-order,
+  -llvmlibc-*,
+  -modernize-use-trailing-return-type,
+  -misc-non-private-member-variables-in-classes,
+  -cppcoreguidelines-pro-type-vararg,
+  -hicpp-vararg,
+  -cppcoreguidelines-avoid-c-arrays,
+  -hicpp-avoid-c-arrays,
+  -modernize-avoid-c-arrays
 WarningsAsErrors: ''
 CheckOptions:
   - key: 'bugprone-argument-comment.StrictMode'

src/attr_line.hh

@@ -169,7 +169,8 @@ template<typename T>
 struct string_attr_wrapper {
     explicit string_attr_wrapper(const string_attr* sa) : saw_string_attr(sa) {}
 
-    const T& get() const
+    template<typename U = T>
+    std::enable_if_t<!std::is_void<U>::value, const U&> get() const
     {
         return this->saw_string_attr->sa_value.template get<T>();
     }

src/hotkeys.cc

@@ -95,7 +95,7 @@ public:
                          false);
     };
 
-    std::string to_string(const struct line_range& lr)
+    std::string to_string(const struct line_range& lr) const
     {
         const char* start = this->lh_msg_buffer.get_data();
 

src/logfile_sub_source.cc

@@ -1464,12 +1464,18 @@ logfile_sub_source::eval_sql_filter(sqlite3_stmt* stmt,
             continue;
         }
         if (strcmp(name, ":log_body") == 0) {
-            auto iter = find_string_attr(sa, &SA_BODY);
-            sqlite3_bind_text(stmt,
-                              lpc + 1,
-                              &(sbr.get_data()[iter->sa_range.lr_start]),
-                              iter->sa_range.length(),
-                              SQLITE_STATIC);
+            auto body_attr_opt = get_string_attr(sa, SA_BODY);
+            if (body_attr_opt) {
+                auto& sar = body_attr_opt.value().saw_string_attr->sa_range;
+
+                sqlite3_bind_text(stmt,
+                                  lpc + 1,
+                                  sbr.get_data_at(sar.lr_start),
+                                  sar.length(),
+                                  SQLITE_STATIC);
+            } else {
+                sqlite3_bind_null(stmt, lpc + 1);
+            }
             continue;
         }
         if (strcmp(name, ":log_raw_text") == 0) {
@@ -1485,7 +1491,7 @@ logfile_sub_source::eval_sql_filter(sqlite3_stmt* stmt,
             }
             continue;
         }
-        for (auto& lv : values) {
+        for (const auto& lv : values) {
             if (lv.lv_meta.lvm_name != &name[1]) {
                 continue;
             }

test/test_date_time_scanner.cc

@@ -43,12 +43,14 @@ static const char* GOOD_TIMES[] = {
     "05/18/2018 12:00:53 AM",
 };
 
-static const char* BAD_TIMES[] = {"1-2-3 1:2:3",
+static const char* BAD_TIMES[] = {
+    "1-2-3 1:2:3",
 
-                                  "2013-22-01 12:01:22",
-                                  "2013-00-01 12:01:22",
+    "2013-22-01 12:01:22",
+    "2013-00-01 12:01:22",
 
-                                  "@4000000043"};
+    "@4000000043",
+};
 
 int
 main(int argc, char* argv[])