tweaks: improve two comments, and exclude two unneeded prototypes

And declare two more variables as 'static', like all its neighbors.

src/nano.c

@@ -1607,8 +1607,8 @@ void process_a_keystroke(void)
 		}
 	}
 
-	/* If we have a command, or if there aren't any other key codes waiting,
-	 * it's time to insert the gathered bytes into the edit buffer. */
+	/* If there are gathered bytes and we have a command or no other key codes
+	 * are waiting, it's time to insert these bytes into the edit buffer. */
 	if (depth > 0 && (function || waiting_keycodes() == 0)) {
 		puddle[depth] = '\0';
 		inject(puddle, depth);

src/prompt.c

@@ -281,9 +281,8 @@ void absorb_character(int input, functionptrtype function)
 		}
 	}
 
-	/* If we got a shortcut, or if there aren't any other keystrokes waiting,
-	 * it's time to insert all characters in the input buffer (if not empty)
-	 * into the answer, and then clear the input buffer. */
+	/* If there are gathered bytes and we have a command or no other key codes
+	 * are waiting, it's time to insert these bytes into the answer. */
 	if (depth > 0 && (function || waiting_keycodes() == 0)) {
 		puddle[depth] = '\0';
 		inject_into_answer(puddle, depth);

src/prototypes.h

@@ -579,8 +579,10 @@ linestruct *line_from_number(ssize_t number);
 #endif
 
 /* Most functions in winio.c. */
+#ifndef NANO_TINY
 void record_macro(void);
 void run_macro(void);
+#endif
 void reserve_space_for(size_t newsize);
 size_t waiting_keycodes(void);
 #ifdef ENABLE_NANORC

src/winio.c

@@ -62,9 +62,9 @@ static bool linger_after_escape = FALSE;
 		/* Whether to give ncurses some time to get the next code. */
 static int statusblank = 0;
 		/* The number of keystrokes left before we blank the status bar. */
-size_t from_x = 0;
+static size_t from_x = 0;
 		/* From where in the relevant line the current row is drawn. */
-size_t till_x = 0;
+static size_t till_x = 0;
 		/* Until where in the relevant line the current row is drawn. */
 static bool has_more = FALSE;
 		/* Whether the current line has more text after the displayed part. */