lupyuen commented on code in PR #15936:
URL: https://github.com/apache/nuttx/pull/15936#discussion_r1980162385


##########
arch/x86_64/src/intel64/intel64_fbterm.c:
##########
@@ -284,43 +296,45 @@ void x86_64_mb2_fbinitialize(struct 
multiboot_tag_framebuffer *fbt)
  * Name: fb_putc
  ****************************************************************************/
 
-void fb_putc(char ch)
+void fb_putc(int ch)
 {
   const struct nx_fontbitmap_s *fbm;
   uint8_t                       gly_x;
   uint8_t                       gly_y;
+  NXHANDLE                      font_handle = (NXHANDLE)g_fb_term.font;
 
   if (g_fb.baseaddr == NULL)
     {
-      return;
+      return ;
     }
 
   if (ch == '\n')
     {
       g_fb_term.cursor_y += g_fb_term.font->metrics.mxheight;
-      return;
+      g_fb_term.cursor_x = 0;
+      return ;

Review Comment:
   ```suggestion
         return;
   ```
   Same here



##########
arch/x86_64/src/intel64/intel64_fbterm.c:
##########
@@ -284,43 +296,45 @@ void x86_64_mb2_fbinitialize(struct 
multiboot_tag_framebuffer *fbt)
  * Name: fb_putc
  ****************************************************************************/
 
-void fb_putc(char ch)
+void fb_putc(int ch)
 {
   const struct nx_fontbitmap_s *fbm;
   uint8_t                       gly_x;
   uint8_t                       gly_y;
+  NXHANDLE                      font_handle = (NXHANDLE)g_fb_term.font;
 
   if (g_fb.baseaddr == NULL)
     {
-      return;
+      return ;

Review Comment:
   ```suggestion
         return;
   ```
   Please remove the space thanks :-)



##########
arch/x86_64/src/intel64/intel64_fbterm.c:
##########
@@ -284,43 +296,45 @@ void x86_64_mb2_fbinitialize(struct 
multiboot_tag_framebuffer *fbt)
  * Name: fb_putc
  ****************************************************************************/
 
-void fb_putc(char ch)
+void fb_putc(int ch)
 {
   const struct nx_fontbitmap_s *fbm;
   uint8_t                       gly_x;
   uint8_t                       gly_y;
+  NXHANDLE                      font_handle = (NXHANDLE)g_fb_term.font;
 
   if (g_fb.baseaddr == NULL)
     {
-      return;
+      return ;
     }
 
   if (ch == '\n')
     {
       g_fb_term.cursor_y += g_fb_term.font->metrics.mxheight;
-      return;
+      g_fb_term.cursor_x = 0;
+      return ;
     }
 
   if (ch == '\r')
     {
       g_fb_term.cursor_x = 0;
-      return;
+      return ;

Review Comment:
   ```suggestion
         return;
   ```
   Same here



##########
arch/x86_64/src/intel64/intel64_fbterm.c:
##########
@@ -284,43 +296,45 @@ void x86_64_mb2_fbinitialize(struct 
multiboot_tag_framebuffer *fbt)
  * Name: fb_putc
  ****************************************************************************/
 
-void fb_putc(char ch)
+void fb_putc(int ch)
 {
   const struct nx_fontbitmap_s *fbm;
   uint8_t                       gly_x;
   uint8_t                       gly_y;
+  NXHANDLE                      font_handle = (NXHANDLE)g_fb_term.font;
 
   if (g_fb.baseaddr == NULL)
     {
-      return;
+      return ;
     }
 
   if (ch == '\n')
     {
       g_fb_term.cursor_y += g_fb_term.font->metrics.mxheight;
-      return;
+      g_fb_term.cursor_x = 0;
+      return ;
     }
 
   if (ch == '\r')
     {
       g_fb_term.cursor_x = 0;
-      return;
+      return ;
     }
 
-  fbm = nxf_getbitmap((NXHANDLE)g_fb_term.font, ch);
+  fbm = nxf_getbitmap(font_handle, ch);
   if (fbm == NULL)
     {
-      fb_putc('.');
-      return;
+      fbm = nxf_getbitmap(font_handle, '.');
+      g_fb_term.cursor_x += fbm->metric.width;
+      return ;

Review Comment:
   ```suggestion
         return;
   ```
   Same here



##########
arch/x86_64/src/intel64/intel64_fbterm.c:
##########
@@ -348,5 +362,7 @@ void fb_putc(char ch)
     }
 
   g_fb_term.cursor_x += fbm->metric.width;
+
+  return ;

Review Comment:
   ```suggestion
     return;
   ```
   Same here



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