combine function and main snippet into one (c)

lua/snippets/c.lua

@@ -19,8 +19,19 @@ return {
   }),
 
   -- function snippet
-  s("fn", {
+  s({ trig = [[fn\|main]], trigEngine = "vim" }, {
+    d(1, function(_, snip)
+      if snip.trigger == "main" then
+        return sn(nil, {
+          t({ "int", "main(int argc, char *argv[])" })
+        })
+      else
+        return sn(nil, {
           c(1, {
+            t(""),
+            t("static "),
+          }),
+          c(2, {
             t("void"),
             t("char"),
             t("int"),
@@ -31,16 +42,20 @@ return {
             i(nil, "myType"),
           }),
           t({ "", "" }),
-    c(2, {
+          c(3, {
             t(""),
             t("*")
           }),
-    i(3, "myFunc");
+          i(4, "myFunc");
           t("("),
-    i(4),
+          i(5),
           t(")"),
+        })
+      end
+    end, {}),
     t({ "", "{", "\t" }),
     i(0),
-    t({ "", "}" }),
+    t({ "", "}" })
+  }),
   })
 }