Use exit code 1 when there's a style error.

editorconfig/check_command.go

@@ -3,6 +3,7 @@ package editorconfig
 import (
 	"fmt"
 	"github.com/codegangsta/cli"
+	"os"
 	"strconv"
 	"strings"
 )
@@ -19,6 +20,8 @@ func CheckCommand(c *cli.Context) error {
 
 	configs := FindConfigFiles(files)
 
+	hasError := false
+
 	for _, f := range files {
 		rules := GetRulesToApplyToSourcePath(f, configs)
 		if len(rules) == 0 {
@@ -32,6 +35,7 @@ func CheckCommand(c *cli.Context) error {
 			if fullFileChecker, ok := fullFileCheckers[ruleName]; ok {
 				result := fullFileChecker(ruleValue, fileContent)
 				if !result.isOk {
+					hasError = true
 					fmt.Println(f + ": " + ruleName + ": " + result.messageIfNotOk)
 				}
 			}
@@ -46,6 +50,7 @@ func CheckCommand(c *cli.Context) error {
 					result := lineChecker(ruleValue, line)
 					if !result.isOk {
 						fmt.Println(f + ": line " + strconv.Itoa(lineNo) + ": " + ruleName + ": " + result.messageIfNotOk)
+						hasError = true
 						// Don't show more than 1 error per line.
 						break
 					}
@@ -55,5 +60,9 @@ func CheckCommand(c *cli.Context) error {
 		}
 	}
 
+	if hasError {
+		os.Exit(1)
+	}
+
 	return nil
 }