*: Fix clint errors

src/nvim/buffer.c

@@ -2918,7 +2918,7 @@ void maketitle(void)
         int save_called_emsg = called_emsg;
 
         use_sandbox = was_set_insecurely((char_u *)"titlestring", 0);
-        called_emsg = FALSE;
+        called_emsg = false;
         build_stl_str_hl(curwin, (char_u *)buf, sizeof(buf),
                          p_titlestring, use_sandbox,
                          0, maxlen, NULL, NULL);
@@ -3005,7 +3005,7 @@ void maketitle(void)
       append_arg_number(curwin, (char_u *)buf_p,
                         (int)(SPACE_FOR_ARGNR - (size_t)(buf_p - buf)), false);
 
-      strcat(buf_p, " - NVIM");
+      xstrlcat(buf_p, " - NVIM", (sizeof(buf) - (size_t)(buf_p - buf)));
 
       if (maxlen > 0) {
         // Make it shorter by removing a bit in the middle.

src/nvim/ex_getln.c

@@ -4851,10 +4851,10 @@ void ExpandGeneric(
   count = 0;
   for (i = 0;; i++) {
     str = (*func)(xp, i);
-    if (str == NULL) { // end of list
+    if (str == NULL) {  // End of list.
       break;
     }
-    if (*str == NUL) {  // skip empty strings
+    if (*str == NUL) {  // Skip empty strings.
       continue;
     }
     if (vim_regexec(regmatch, str, (colnr_T)0)) {

src/nvim/fileio.c

@@ -286,7 +286,7 @@ readfile (
   off_T filesize = 0;
   int skip_read = false;
   context_sha256_T sha_ctx;
-  int read_undo_file = FALSE;
+  int read_undo_file = false;
   linenr_T linecnt;
   int error = FALSE;                    /* errors encountered */
   int ff_error = EOL_UNKNOWN;           /* file format with errors */

src/nvim/ops.c

@@ -3595,7 +3595,6 @@ int do_join(size_t count,
       // We don't want to remove the comment leader if the
       // previous line is not a comment.
       if (t > 0 && prev_was_comment) {
-
         char_u *new_curr = skip_comment(curr, true, insert_space,
                                         &prev_was_comment);
         comments[t] = (int)(new_curr - curr);

src/nvim/os/env.c

@@ -822,11 +822,11 @@ size_t home_replace(const buf_T *const buf, const char_u *src,
 
     // if (!one) skip to separator: space or comma.
     while (*src && (one || (*src != ',' && *src != ' ')) && --dstlen > 0) {
-      *dst_p++ = (char)*src++;
+      *dst_p++ = (char)(*src++);
     }
     // Skip separator.
     while ((*src == ' ' || *src == ',') && --dstlen > 0) {
-      *dst_p++ = (char)*src++;
+      *dst_p++ = (char)(*src++);
     }
   }
   // If (dstlen == 0) out of space, what to do???

src/nvim/quickfix.c

@@ -4738,7 +4738,7 @@ void ex_helpgrep(exarg_T *eap)
   regmatch.regprog = vim_regcomp(eap->arg, RE_MAGIC + RE_STRING);
   regmatch.rm_ic = FALSE;
   if (regmatch.regprog != NULL) {
-    /* create a new quickfix list */
+    // Create a new quickfix list.
     qf_new_list(qi, *eap->cmdlinep);
 
     /* Go through all directories in 'runtimepath' */

src/nvim/screen.c

@@ -6367,7 +6367,7 @@ static void linecopy(int to, int from, win_T *wp)
           wp->w_width * sizeof(ScreenLines[0]));
 
   memmove(ScreenLinesUC + off_to, ScreenLinesUC + off_from,
-      wp->w_width * sizeof(u8char_T));
+          wp->w_width * sizeof(ScreenLinesUC[0]));
   for (int i = 0; i < p_mco; i++) {
     memmove(ScreenLinesC[i] + off_to, ScreenLinesC[i] + off_from,
             wp->w_width * sizeof(ScreenLinesC[0]));

src/nvim/syntax.c

@@ -4561,7 +4561,7 @@ syn_cmd_region (
       item = ITEM_END;
     } else if (STRCMP(key, "SKIP") == 0) {
       if (pat_ptrs[ITEM_SKIP] != NULL) {  // One skip pattern allowed.
-        illegal = TRUE;
+        illegal = true;
         break;
       }
       item = ITEM_SKIP;

src/nvim/tui/tui.c

@@ -605,8 +605,7 @@ static void cursor_goto(UI *ui, int row, int col)
       int n = col - grid->col;
       if (n <= (row == grid->row ? 4 : 2)
           && cheap_to_print(ui, grid->row, grid->col, n)) {
-        UGRID_FOREACH_CELL(grid, grid->row, grid->row,
+        UGRID_FOREACH_CELL(grid, grid->row, grid->row, grid->col, col - 1, {
-                           grid->col, col - 1, {
           print_cell(ui, cell);
         });
       }