Include delete-subst command

commands/configcmd.go

@@ -73,6 +73,11 @@ func GetConfigCommand(name string) *cobra.Command {
 	deleteSetter.Long = cfgdocs.DeleteSetterShort + "\n" + cfgdocs.DeleteSetterLong
 	deleteSetter.Example = cfgdocs.DeleteSetterExamples
 
+	deleteSubstitution := DeleteSubstitutionCommand(name)
+	deleteSubstitution.Short = cfgdocs.DeleteSubstShort
+	deleteSubstitution.Long = cfgdocs.DeleteSubstShort + "\n" + cfgdocs.DeleteSubstLong
+	deleteSubstitution.Example = cfgdocs.DeleteSubstExamples
+
 	createSubstitution := CreateSubstCommand(name)
 	createSubstitution.Short = cfgdocs.CreateSubstShort
 	createSubstitution.Long = cfgdocs.CreateSubstShort + "\n" + cfgdocs.CreateSubstLong
@@ -100,7 +105,7 @@ func GetConfigCommand(name string) *cobra.Command {
 	tree.Long = cfgdocs.TreeShort + "\n" + cfgdocs.TreeLong
 	tree.Example = cfgdocs.TreeExamples
 
-	cfgCmd.AddCommand(an, cat, count, createSetter, deleteSetter, createSubstitution, fmt,
+	cfgCmd.AddCommand(an, cat, count, createSetter, deleteSetter, deleteSubstitution, createSubstitution, fmt,
 		grep, listSetters, set, tree)
 	return cfgCmd
 }
@@ -115,6 +120,11 @@ func DeleteSetterCommand(parent string) *cobra.Command {
 	return configcobra.DeleteSetter(parent)
 }
 
+func DeleteSubstitutionCommand(parent string) *cobra.Command {
+	fieldmeta.SetShortHandRef(ShortHandRef)
+	return configcobra.DeleteSubstitution(parent)
+}
+
 func CreateSubstCommand(parent string) *cobra.Command {
 	fieldmeta.SetShortHandRef(ShortHandRef)
 	return configcobra.CreateSubstitution(parent)

site/content/en/reference/cfg/delete-setter/_index.md

@@ -4,10 +4,10 @@ linkTitle: "delete-setter"
 weight: 4
 type: docs
 description: >
-   Delete a setter for one field
+   Delete a setter
 ---
 <!--mdtogo:Short
-    Delete a setter for one field
+    Delete a setter
 -->
 
 {{< asciinema key="cfg-delete-setter" rows="10" preload="1" >}}
@@ -31,7 +31,7 @@ kpt cfg delete-setter DIR/ replicas
 ### Synopsis
 <!--mdtogo:Long-->
 ```sh
-kpt cfg delete-setter DIR NAME VALUE
+kpt cfg delete-setter DIR NAME
 
 DIR:
   Path to a package directory

site/content/en/reference/cfg/delete-subst/_index.md

@@ -0,0 +1,47 @@
+---
+title: "Delete-subst"
+linkTitle: "delete-subst"
+weight: 4
+type: docs
+description: >
+   Delete a substitution
+---
+<!--mdtogo:Short
+    Delete a substitution
+-->
+
+Substitutions provide a solution for template-free substitution of field values
+built on top of [setters]. They enable substituting values into part of a
+field, including combining multiple setters into a single value.
+
+See the [creating substitutions] guide for more info on creating
+substitutions.
+
+The created substitutions can be deleted using `delete-subst` command.
+
+### Examples
+<!--mdtogo:Examples-->
+```sh
+# delete a substitution image-tag
+kpt cfg delete-subst DIR/ image-tag
+```
+
+<!--mdtogo-->
+
+### Synopsis
+<!--mdtogo:Long-->
+```sh
+kpt cfg delete-subst DIR NAME
+
+DIR:
+  Path to a package directory
+
+NAME:
+  The name of the substitution to delete. e.g. image-tag
+
+```
+
+<!--mdtogo-->
+
+[setters]: ../create-setter/
+[creating substitutions]: ../../../guides/producer/substitutions/