badwords: fix two exceptions and drop them

Also:
- extend `dir` rule to exclude C assignments.

Closes #19532

src/tool_cfgable.h

@@ -248,7 +248,7 @@ struct OperationConfig {
   BIT(autoreferer);         /* automatically set referer */
   BIT(show_headers);        /* show headers to data output */
   BIT(no_body);             /* do not get the body */
-  BIT(dirlistonly);         /* only get the FTP dir list */
+  BIT(dirlistonly);         /* only get the FTP directory list */
   BIT(unrestricted_auth);   /* Continue to send authentication (user+password)
                                when following redirects, even when hostname
                                changed */

src/tool_ipfs.c

@@ -176,7 +176,7 @@ CURLcode ipfs_url_rewrite(CURLU *uh, const char *protocol, char **url,
     goto clean;
   /* inputpath might be NULL or a valid pointer now */
 
-  /* set gateway parts in input url */
+  /* set gateway parts in input URL */
   if(curl_url_set(uh, CURLUPART_SCHEME, gwscheme, CURLU_URLENCODE) ||
      curl_url_set(uh, CURLUPART_HOST, gwhost, CURLU_URLENCODE) ||
      curl_url_set(uh, CURLUPART_PORT, gwport, CURLU_URLENCODE))

src/tool_operate.c

@@ -2123,7 +2123,7 @@ static CURLcode transfer_per_config(struct OperationConfig *config,
   CURLcode result;
   *added = FALSE;
 
-  /* Check we have a url */
+  /* Check we have a URL */
   if(!config->url_list || !config->url_list->url) {
     helpf("(%d) no URL specified", CURLE_FAILED_INIT);
     result = CURLE_FAILED_INIT;

src/tool_operhlp.c

@@ -80,7 +80,7 @@ CURLcode urlerr_cvt(CURLUcode ucode)
 
 /*
  * Adds the filename to the URL if it does not already have one.
- * url will be freed before return if the returned pointer is different
+ * URL will be freed before return if the returned pointer is different
  */
 CURLcode add_file_name_to_url(CURL *curl, char **inurlp, const char *filename)
 {

src/tool_writeout.h

@@ -56,7 +56,7 @@ typedef enum {
   VAR_INPUT_URLQUERY,
   VAR_INPUT_URLFRAGMENT,
   VAR_INPUT_URLZONEID,
-  /* the same ones again for url *effective* */
+  /* the same ones again for URL *effective* */
   VAR_INPUT_URLESCHEME, /* keep this the first URLE* variable */
   VAR_INPUT_URLEUSER,
   VAR_INPUT_URLEPASSWORD,