Require a space after the inline comment tag name (i.e. after #)

Author: dylanahsmith

ext/liquid_c/block.c

@@ -120,9 +120,9 @@ static VALUE block_body_initialize(VALUE self, VALUE parse_context)
     return Qnil;
 }
 
-static int is_id(int c)
+static int is_tag_name_char(int c)
 {
-    return rb_isalnum(c) || c == '_';
+    return rb_isalnum(c) || c == '_' || c == '#';
 }
 
 static tag_markup_t internal_block_body_parse(block_body_t *body, parse_context_t *parse_context)
@@ -204,18 +204,13 @@ static tag_markup_t internal_block_body_parse(block_body_t *body, parse_context_
 
                 // Imitate \s*(\w+)\s*(.*)? regex
                 const char *name_start = read_while(start, end, rb_isspace);
-                const char *name_end = read_while(name_start, end, is_id);
+                const char *name_end = read_while(name_start, end, is_tag_name_char);
                 long name_len = name_end - name_start;
 
                 if (name_len == 0) {
-                    if (name_start < end && *name_start == '#') { // inline comment
-                        name_end++;
-                        name_len++;
-                    } else {
-                        VALUE str = rb_enc_str_new(token.str_trimmed, token.len_trimmed, utf8_encoding);
-                        unknown_tag = (tag_markup_t) { str, str };
-                        goto loop_break;
-                    }
+                    VALUE str = rb_enc_str_new(token.str_trimmed, token.len_trimmed, utf8_encoding);
+                    unknown_tag = (tag_markup_t) { str, str };
+                    goto loop_break;
                 }
 
                 if (name_len == 6 && strncmp(name_start, "liquid", 6) == 0) {