Debugging.

packages/Caption.sty

@@ -27,4 +27,55 @@
 			\RaggedLeft%
 		\fi%
 	}%
-}
+}
+
+\ExplSyntaxOn
+
+\keys_define:nn {MyCaption} {
+	figure	.code:n		= {\str_set:Nn \l_MyCaption_type_str {figure}},
+
+	format	.tl_set:N	= \l_MyCaption_format_tl,
+	format	.initial:n	= {\Centering\small\color{caption}},
+
+	table	.code:n		= {\str_set:Nn \l_MyCaption_type_str {table}},
+
+	type	.choices:nn	= {figure,table}{
+		\str_set:Ne \l_MyCaption_type_str {\l_keys_choice_tl}
+	},
+	type	.initial:n	= {figure},
+}
+
+\tl_new:N \l_MyCaption_label_tl
+\tl_new:N \l_MyCaption_number_tl
+
+\NewDocumentCommand{\MyCaption}{
+	% #1: Key-value options.
+	O{}
+	% #2: Label
+	m
+	% #3: Caption
+	m
+}{ \group_begin:
+	\keys_set:nn {MyCaption} {#1}
+	\str_case:en {\l_MyCaption_type_str} {
+		{figure} {
+			\addtocounter{figure}{1}
+			\tl_set:Nn \l_MyCaption_label_tl {Figure}
+			\tl_set:Nn \l_MyCaption_number_tl {
+				\arabic{chapter}.\arabic{figure}
+			}
+			\addcontentsline{lof}{figure}{\l_MyCaption_number_tl\numberline#3}
+		}
+		{table} {
+			\addtocounter{table}{1}
+			\tl_set:Nn \l_MyCaption_label_tl {Table}
+			\tl_set:Nn \l_MyCaption_number_tl {
+				\arabic{chapter}.\arabic{table}
+			}
+			\addcontentsline{lot}{table}{\l_MyCaption_number_tl\numberline#3}
+		}
+	}
+	\l_MyCaption_format_tl
+	\l_MyCaption_label_tl~\l_MyCaption_number_tl :~#3
+	\label{#2}
+\group_end: }