Updated .gitignore to exclude object files

.gitignore

@@ -0,0 +1,2 @@
+editor
+editor.o

Makefile

@@ -0,0 +1,23 @@
+EXEC_FILE=editor
+CFLAGS=
+
+all: $(EXEC_FILE)
+
+$(EXEC_FILE): $(EXEC_FILE).o
+	gcc $(CFLAGS) -o $@ $^ -lncurses
+
+$(EXEC_FILE).o: $(EXEC_FILE).c
+	gcc $(CFLAGS) -c -o $@ $^
+
+.PHONY: debug
+debug: CFLAGS+=-g
+debug: $(EXEC_FILE)
+
+.PHONY: allwarn
+allwarn: CFLAGS+=-Wall -Wextra -pedantic
+allwarn: $(EXEC_FILE)
+
+.PHONY: clean
+clean:
+	rm $(EXEC_FILE)
+	rm $(EXEC_FILE).o

editor.c

@@ -27,7 +27,10 @@ Buffer* new_buffer(int size) {
 
 void buffer_grow(Buffer* buffer) {
 
-	int old_size = buffer->size;
+	int old_size = buffer->size;  /* I am making use of the fact that, whenever this 
+					function is called, the strlen of the string must 
+					equal the size of the buffer (since the gap size is zero) */
+
 	int start_offset = buffer->start - buffer->text;
 	buffer->size += 10;
 	buffer->text = realloc(buffer->text,buffer->size);
@@ -135,6 +138,15 @@ int main() {
 				buffer_right(buffer);
 				break;
 
+			case 10:  /* Enter key */
+				buffer_insert('\n',buffer);  /* Why handle this separately? 
+								Because, by default, curses seems to send '\r\n', 
+								which is technically two characters. I should 
+								probably add some code to deal with this scenario 
+								in the 'insert' method (instead of creating an 
+								exception here), but that's a problem for another day. */
+				break;
+
 			default:
 				buffer_insert(ch,buffer);