it's possible to copy the code from the snippet view

c2html.c

@@ -456,11 +456,7 @@ static void print_escaped(buff_t *buff, const char *str, long len)
 
         long off = j;
 
-        while(j < len 
+        while(j < len && str[j] != '<' && str[j] != '>')
-              && str[j] != '<' 
-              && str[j] != '>' 
-              && str[j] != ' '
-              && str[j] != '\t')
             j += 1;
 
         long end = j;
@@ -472,14 +468,6 @@ static void print_escaped(buff_t *buff, const char *str, long len)
         switch(str[j]) {
             case '<': buff_printf(buff, "&lt;"); break;
             case '>': buff_printf(buff, "&gt;"); break;
-            case '\t': buff_printf(buff, "&emsp;&emsp;&emsp;&emsp;"); break;
-            case ' ': 
-            if(j == 0 || j == len-1 || (str[j-1] == ' ' || str[j-1] == '\t'))
-                buff_printf(buff, "&emsp;");
-            else 
-                buff_printf(buff, " ");
-            break;
-
             default: assert(0);
         }
 
@@ -538,17 +526,12 @@ char *c2html(const char *str, long len, _Bool table_mode, const char *class_pref
             break;
 
             case T_SPACE:
-            if(tokens[i].len == 1)
+            buff_puts(&buff, str + tokens[i].off, tokens[i].len);
-                buff_printf(&buff, " ", 1);
-            else {
-                for(int j = 0; j < tokens[i].len; j += 1)
-                    buff_printf(&buff, "&emsp;");
-            }
             break;
 
             case T_TAB:
             for(int j = 0; j < tokens[i].len; j += 1)
-                buff_printf(&buff, "&emsp;&emsp;&emsp;&emsp;");
+                buff_printf(&buff, "    ");
             break;
 
             case T_KWORD:

style.css

@@ -42,11 +42,16 @@
     }
 
     div.c2h-code table td:first-child {
+        user-select: none;
         text-align: right;
         padding: 0 10px;
         color: hsla(210, 13%, 40%, 0.7);
     }
 
+    div.c2h-code table td:last-child {
+        white-space: pre;
+    }
+
     .c2h-comment {
         color: hsl(221, 12%, 69%);
     }