Use own slack fork to fix #937 (#943)

go.mod

@@ -36,6 +36,7 @@ require (
 	github.com/nelsonken/gomf v0.0.0-20180504123937-a9dd2f9deae9
 	github.com/nicksnyder/go-i18n v1.4.0 // indirect
 	github.com/nlopes/slack v0.6.0
+	//github.com/nlopes/slack v0.6.0
 	github.com/onsi/ginkgo v1.6.0 // indirect
 	github.com/onsi/gomega v1.4.1 // indirect
 	github.com/paulrosania/go-charset v0.0.0-20190326053356-55c9d7a5834c
@@ -72,4 +73,6 @@ require (
 
 replace github.com/bwmarrin/discordgo v0.19.0 => github.com/matterbridge/discordgo v0.0.0-20191026232317-01823f4ebba4
 
+replace github.com/nlopes/slack v0.6.0 => github.com/matterbridge/slack v0.1.1-0.20191113220225-25f80ef0a0d1
+
 go 1.13

go.sum

@@ -131,6 +131,8 @@ github.com/matterbridge/gozulipbot v0.0.0-20190212232658-7aa251978a18 h1:fLhwXtW
 github.com/matterbridge/gozulipbot v0.0.0-20190212232658-7aa251978a18/go.mod h1:yAjnZ34DuDyPHMPHHjOsTk/FefW4JJjoMMCGt/8uuQA=
 github.com/matterbridge/logrus-prefixed-formatter v0.0.0-20180806162718-01618749af61 h1:R/MgM/eUyRBQx2FiH6JVmXck8PaAuKfe2M1tWIzW7nE=
 github.com/matterbridge/logrus-prefixed-formatter v0.0.0-20180806162718-01618749af61/go.mod h1:iXGEotOvwI1R1SjLxRc+BF5rUORTMtE0iMZBT2lxqAU=
+github.com/matterbridge/slack v0.1.1-0.20191113220225-25f80ef0a0d1 h1:wXVBLvvMFMfqnDE6aVyxScanzRP1WIErz7+fY/9dhmY=
+github.com/matterbridge/slack v0.1.1-0.20191113220225-25f80ef0a0d1/go.mod h1:2uCJim0Ct2z1Uj+XQq47KCLLC1b/9UTYaZOvDtbZfK4=
 github.com/mattermost/mattermost-server v5.5.0+incompatible h1:0wcLGgYtd+YImtLDPf2AOfpBHxbU4suATx+6XKw1XbU=
 github.com/mattermost/mattermost-server v5.5.0+incompatible/go.mod h1:5L6MjAec+XXQwMIt791Ganu45GKsSiM+I0tLR9wUj8Y=
 github.com/mattn/go-colorable v0.1.1 h1:G1f5SKeVxmagw/IyvzvtZE4Gybcc4Tr1tf7I8z0XgOg=

vendor/github.com/nlopes/slack/block_conv.go

@@ -61,7 +61,7 @@ func (b *Blocks) UnmarshalJSON(data []byte) error {
 		case "section":
 			block = &SectionBlock{}
 		default:
-			return errors.New("unsupported block type")
+			block = &UnknownBlock{}
 		}
 
 		err = json.Unmarshal(r, block)
@@ -127,7 +127,7 @@ func (b *BlockElements) UnmarshalJSON(data []byte) error {
 		case "static_select", "external_select", "users_select", "conversations_select", "channels_select":
 			blockElement = &SelectBlockElement{}
 		default:
-			return errors.New("unsupported block element type")
+			blockElement = &UnknownBlockElement{}
 		}
 
 		err = json.Unmarshal(r, blockElement)

vendor/github.com/nlopes/slack/block_element.go

@@ -62,6 +62,20 @@ type BlockElements struct {
 	ElementSet []BlockElement `json:"elements,omitempty"`
 }
 
+// UnknownBlockElement any block element that this library does not directly support.
+// See the "Rich Elements" section at the following URL:
+// https://api.slack.com/changelog/2019-09-what-they-see-is-what-you-get-and-more-and-less
+// New block element types may be introduced by Slack at any time; this is a catch-all for any such block elements.
+type UnknownBlockElement struct {
+	Type     MessageElementType `json:"type"`
+	Elements BlockElements
+}
+
+// ElementType returns the type of the Element
+func (s UnknownBlockElement) ElementType() MessageElementType {
+	return s.Type
+}
+
 // ImageBlockElement An element to insert an image - this element can be used
 // in section and context blocks only. If you want a block with only an image
 // in it, you're looking for the image block.

vendor/github.com/nlopes/slack/block_unknown.go

@@ -0,0 +1,14 @@
+package slack
+
+// UnknownBlock represents a block type that is not yet known. This block type exists to prevent Slack from introducing
+// new and unknown block types that break this library.
+type UnknownBlock struct {
+	Type     MessageBlockType `json:"type"`
+	BlockID  string           `json:"block_id,omitempty"`
+	Elements BlockElements    `json:"elements"`
+}
+
+// BlockType returns the type of the block
+func (b UnknownBlock) BlockType() MessageBlockType {
+	return b.Type
+}

vendor/github.com/nlopes/slack/go.mod

@@ -1,4 +1,4 @@
-module github.com/nlopes/slack
+module github.com/matterbridge/slack
 
 require (
 	github.com/davecgh/go-spew v1.1.1 // indirect

vendor/modules.txt

@@ -131,7 +131,7 @@ github.com/nicksnyder/go-i18n/i18n
 github.com/nicksnyder/go-i18n/i18n/bundle
 github.com/nicksnyder/go-i18n/i18n/language
 github.com/nicksnyder/go-i18n/i18n/translation
-# github.com/nlopes/slack v0.6.0
+# github.com/nlopes/slack v0.6.0 => github.com/matterbridge/slack v0.1.1-0.20191113220225-25f80ef0a0d1
 github.com/nlopes/slack
 github.com/nlopes/slack/internal/errorsx
 github.com/nlopes/slack/internal/timex