Repository: spf13/cobra
Pull request #1150 (2020-07-01 12:37:17)

Add golangci-lint in project using cobra
Add golangci-lint in project using cobra

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umarcor: Ref #1044.

Patch:
diff --git a/README.md b/README.md
index 1484240..683eba4 100644
--- a/README.md
+++ b/README.md
@@ -312,6 +312,37 @@ var versionCmd = &cobra.Command{
 }
 ```
 
+### Returning and handling errors
+
+If you wish to return an error to the caller of a command, `RunE` can be used.
+
+```go
+package cmd
+
+import (
+  "fmt"
+
+  "github.com/spf13/cobra"
+)
+
+func init() {
+  rootCmd.AddCommand(tryCmd)
+}
+
+var tryCmd = &cobra.Command{
+  Use:   "try",
+  Short: "Try and possibly fail at something",
+  RunE: func(cmd *cobra.Command, args []string) error {
+    err := someFunc()
+    if err := nil {
+	return err
+    }
+  },
+}
+```
+
+The error can then be caught at the execute function call.
+
 ## Working with Flags
 
 Flags provide modifiers to control how the action command operates.
diff --git a/fish_completions.go b/fish_completions.go
index 52b89c6..66a6357 100644
--- a/fish_completions.go
+++ b/fish_completions.go
@@ -5,9 +5,15 @@ import (
 	"fmt"
 	"io"
 	"os"
+	"strings"
 )
 
 func genFishComp(buf *bytes.Buffer, name string, includeDesc bool) {
+	// Variables should not contain a '-' or ':' character
+	nameForVar := name
+	nameForVar = strings.Replace(nameForVar, "-", "_", -1)
+	nameForVar = strings.Replace(nameForVar, ":", "_", -1)
+
 	compCmd := ShellCompRequestCmd
 	if !includeDesc {
 		compCmd = ShellCompNoDescRequestCmd
@@ -38,12 +44,12 @@ function __%[1]s_perform_completion
     __%[1]s_debug "emptyArg: $emptyArg"
 
     if not type -q "$args[1]"
-        # This can happen when "complete --do-complete %[1]s" is called when running this script.
+        # This can happen when "complete --do-complete %[2]s" is called when running this script.
         __%[1]s_debug "Cannot find $args[1]. No completions."
         return
     end
 
-    set requestComp "$args[1] %[2]s $args[2..-1] $emptyArg"
+    set requestComp "$args[1] %[3]s $args[2..-1] $emptyArg"
     __%[1]s_debug "Calling $requestComp"
 
     set results (eval $requestComp 2> /dev/null)
@@ -99,11 +105,11 @@ function __%[1]s_prepare_completions
     __%[1]s_debug "Completions are: $__%[1]s_comp_results"
     __%[1]s_debug "Directive is: $directive"
 
-    set shellCompDirectiveError %[3]d
-    set shellCompDirectiveNoSpace %[4]d
-    set shellCompDirectiveNoFileComp %[5]d
-    set shellCompDirectiveFilterFileExt %[6]d
-    set shellCompDirectiveFilterDirs %[7]d
+    set shellCompDirectiveError %[4]d
+    set shellCompDirectiveNoSpace %[5]d
+    set shellCompDirectiveNoFileComp %[6]d
+    set shellCompDirectiveFilterFileExt %[7]d
+    set shellCompDirectiveFilterDirs %[8]d
 
     if test -z "$directive"
         set directive 0
@@ -158,24 +164,24 @@ end
 # so we can properly delete any completions provided by another script.
 # The space after the the program name is essential to trigger completion for the program
 # and not completion of the program name itself.
-complete --do-complete "%[1]s " &> /dev/null
+complete --do-complete "%[2]s " &> /dev/null
 
 # Remove any pre-existing completions for the program since we will be handling all of them.
-complete -c %[1]s -e
+complete -c %[2]s -e
 
 # The order in which the below two lines are defined is very important so that __%[1]s_prepare_completions
 # is called first.  It is __%[1]s_prepare_completions that sets up the __%[1]s_comp_do_file_comp variable.
 #
 # This completion will be run second as complete commands are added FILO.
 # It triggers file completion choices when __%[1]s_comp_do_file_comp is set.
-complete -c %[1]s -n 'set --query __%[1]s_comp_do_file_comp'
+complete -c %[2]s -n 'set --query __%[1]s_comp_do_file_comp'
 
 # This completion will be run first as complete commands are added FILO.
-# The call to __%[1]s_prepare_completions will setup both __%[1]s_comp_results abd __%[1]s_comp_do_file_comp.
+# The call to __%[1]s_prepare_completions will setup both __%[1]s_comp_results and __%[1]s_comp_do_file_comp.
 # It provides the program's completion choices.
-complete -c %[1]s -n '__%[1]s_prepare_completions' -f -a '$__%[1]s_comp_results'
+complete -c %[2]s -n '__%[1]s_prepare_completions' -f -a '$__%[1]s_comp_results'
 
-`, name, compCmd,
+`, nameForVar, name, compCmd,
 		ShellCompDirectiveError, ShellCompDirectiveNoSpace, ShellCompDirectiveNoFileComp,
 		ShellCompDirectiveFilterFileExt, ShellCompDirectiveFilterDirs))
 }
diff --git a/go.mod b/go.mod
index dea1030..18ff780 100644
--- a/go.mod
+++ b/go.mod
@@ -6,7 +6,7 @@ require (
 	github.com/cpuguy83/go-md2man/v2 v2.0.0
 	github.com/inconshreveable/mousetrap v1.0.0
 	github.com/mitchellh/go-homedir v1.1.0
-	github.com/spf13/pflag v1.0.3
-	github.com/spf13/viper v1.4.0
-	gopkg.in/yaml.v2 v2.2.2
+	github.com/spf13/pflag v1.0.5
+	github.com/spf13/viper v1.7.0
+	gopkg.in/yaml.v2 v2.3.0
 )
diff --git a/go.sum b/go.sum
index 3aaa2ac..e8b69c6 100644
--- a/go.sum
+++ b/go.sum
@@ -1,28 +1,48 @@
 cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
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+cloud.google.com/go v0.44.1/go.mod h1:iSa0KzasP4Uvy3f1mN/7PiObzGgflwredwwASm/v6AU=
+cloud.google.com/go v0.44.2/go.mod h1:60680Gw3Yr4ikxnPRS/oxxkBccT6SA1yMk63TGekxKY=
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+cloud.google.com/go v0.46.3/go.mod h1:a6bKKbmY7er1mI7TEI4lsAkts/mkhTSZK8w33B4RAg0=
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+cloud.google.com/go/datastore v1.0.0/go.mod h1:LXYbyblFSglQ5pkeyhO+Qmw7ukd3C+pD7TKLgZqpHYE=
+cloud.google.com/go/firestore v1.1.0/go.mod h1:ulACoGHTpvq5r8rxGJ4ddJZBZqakUQqClKRT5SZwBmk=
+cloud.google.com/go/pubsub v1.0.1/go.mod h1:R0Gpsv3s54REJCy4fxDixWD93lHJMoZTyQ2kNxGRt3I=
+cloud.google.com/go/storage v1.0.0/go.mod h1:IhtSnM/ZTZV8YYJWCY8RULGVqBDmpoyjwiyrjsg+URw=
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@@ -32,19 +52,55 @@ github.com/gogo/protobuf v1.2.1/go.mod h1:hp+jE20tsWTFYpLwKvXlhS1hjn+gTNwPg2I6zV
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diff --git a/projects_using_cobra.md b/projects_using_cobra.md
index de45033..33a2bf0 100644
--- a/projects_using_cobra.md
+++ b/projects_using_cobra.md
@@ -8,6 +8,7 @@
 - [Gardener](https://github.com/gardener/gardenctl)
 - [Giant Swarm's gsctl](https://github.com/giantswarm/gsctl)
 - [Github CLI](https://github.com/cli/cli)
+- [Golangci-lint](https://golangci-lint.run)
 - [GopherJS](http://www.gopherjs.org/)
 - [Helm](https://helm.sh)
 - [Hugo](https://gohugo.io)


Test patch:
diff --git a/custom_completions_test.go b/custom_completions_test.go
index 66b3e63..276b8a7 100644
--- a/custom_completions_test.go
+++ b/custom_completions_test.go
@@ -1407,39 +1407,6 @@ func TestCompleteCmdInBashScript(t *testing.T) {
 	check(t, output, ShellCompNoDescRequestCmd)
 }
 
-func TestCompleteNoDesCmdInFishScript(t *testing.T) {
-	rootCmd := &Command{Use: "root", Args: NoArgs, Run: emptyRun}
-	child := &Command{
-		Use:               "child",
-		ValidArgsFunction: validArgsFunc,
-		Run:               emptyRun,
-	}
-	rootCmd.AddCommand(child)
-
-	buf := new(bytes.Buffer)
-	rootCmd.GenFishCompletion(buf, false)
-	output := buf.String()
-
-	check(t, output, ShellCompNoDescRequestCmd)
-}
-
-func TestCompleteCmdInFishScript(t *testing.T) {
-	rootCmd := &Command{Use: "root", Args: NoArgs, Run: emptyRun}
-	child := &Command{
-		Use:               "child",
-		ValidArgsFunction: validArgsFunc,
-		Run:               emptyRun,
-	}
-	rootCmd.AddCommand(child)
-
-	buf := new(bytes.Buffer)
-	rootCmd.GenFishCompletion(buf, true)
-	output := buf.String()
-
-	check(t, output, ShellCompRequestCmd)
-	checkOmit(t, output, ShellCompNoDescRequestCmd)
-}
-
 func TestCompleteNoDesCmdInZshScript(t *testing.T) {
 	rootCmd := &Command{Use: "root", Args: NoArgs, Run: emptyRun}
 	child := &Command{
diff --git a/fish_completions_test.go b/fish_completions_test.go
new file mode 100644
index 0000000..532b605
--- /dev/null
+++ b/fish_completions_test.go
@@ -0,0 +1,69 @@
+package cobra
+
+import (
+	"bytes"
+	"testing"
+)
+
+func TestCompleteNoDesCmdInFishScript(t *testing.T) {
+	rootCmd := &Command{Use: "root", Args: NoArgs, Run: emptyRun}
+	child := &Command{
+		Use:               "child",
+		ValidArgsFunction: validArgsFunc,
+		Run:               emptyRun,
+	}
+	rootCmd.AddCommand(child)
+
+	buf := new(bytes.Buffer)
+	rootCmd.GenFishCompletion(buf, false)
+	output := buf.String()
+
+	check(t, output, ShellCompNoDescRequestCmd)
+}
+
+func TestCompleteCmdInFishScript(t *testing.T) {
+	rootCmd := &Command{Use: "root", Args: NoArgs, Run: emptyRun}
+	child := &Command{
+		Use:               "child",
+		ValidArgsFunction: validArgsFunc,
+		Run:               emptyRun,
+	}
+	rootCmd.AddCommand(child)
+
+	buf := new(bytes.Buffer)
+	rootCmd.GenFishCompletion(buf, true)
+	output := buf.String()
+
+	check(t, output, ShellCompRequestCmd)
+	checkOmit(t, output, ShellCompNoDescRequestCmd)
+}
+
+func TestProgWithDash(t *testing.T) {
+	rootCmd := &Command{Use: "root-dash", Args: NoArgs, Run: emptyRun}
+	buf := new(bytes.Buffer)
+	rootCmd.GenFishCompletion(buf, false)
+	output := buf.String()
+
+	// Functions name should have replace the '-'
+	check(t, output, "__root_dash_perform_completion")
+	checkOmit(t, output, "__root-dash_perform_completion")
+
+	// The command name should not have replaced the '-'
+	check(t, output, "-c root-dash")
+	checkOmit(t, output, "-c root_dash")
+}
+
+func TestProgWithColon(t *testing.T) {
+	rootCmd := &Command{Use: "root:colon", Args: NoArgs, Run: emptyRun}
+	buf := new(bytes.Buffer)
+	rootCmd.GenFishCompletion(buf, false)
+	output := buf.String()
+
+	// Functions name should have replace the ':'
+	check(t, output, "__root_colon_perform_completion")
+	checkOmit(t, output, "__root:colon_perform_completion")
+
+	// The command name should not have replaced the ':'
+	check(t, output, "-c root:colon")
+	checkOmit(t, output, "-c root_colon")
+}