add basic PR pipeline (#120)

.travis.yml

@@ -0,0 +1,31 @@
+language: go
+
+go:
+- '1.8'
+- '1.9'
+- '1.10'
+- '1.11'
+- 'master'
+
+# Skip the install step. Don't `go get` dependencies. Only build with the
+# code in vendor/
+install: true
+
+matrix:
+  # It's ok if our code fails on unstable development versions of Go.
+  allow_failures:
+  - go: master
+  # Don't wait for tip tests to finish. Mark the test run green if the
+  # tests pass on the stable versions of Go.
+  fast_finish: true
+
+notifications:
+  email: false
+
+before_script:
+- go get -t ./...
+
+# Note: scripts always run to completion
+script:
+- make validate
+- make test

Makefile

@@ -11,7 +11,7 @@ run-large: build
 build:
 	go build -o build/$(BIN)
 
-release: test
+release: test validate
 	./.scripts/tag.sh
 	goreleaser --rm-dist
 
@@ -21,6 +21,10 @@ install:
 test: build
 	go test -cover -v ./...
 
+validate:
+	@! gofmt -s -d -l . 2>&1 | grep -vE '^\.git/'
+	go vet ./...
+
 lint: build
 	golint -set_exit_status $$(go list ./...)
 
@@ -29,4 +33,4 @@ clean:
 	rm -rf vendor
 	go clean
 
-.PHONY: build install test lint clean release
+.PHONY: build install test lint clean release validate

ui/ui.go

@@ -194,7 +194,7 @@ func layout(g *gocui.Gui) error {
 		logrus.Errorf("invalid config value: 'filetree.pane-width' should be 0 < value < 1, given '%v'", fileTreeSplitRatio)
 		fileTreeSplitRatio = 0.5
 	}
-	splitCols := int(float64(maxX) * (1.0-fileTreeSplitRatio))
+	splitCols := int(float64(maxX) * (1.0 - fileTreeSplitRatio))
 	debugWidth := 0
 	if debug {
 		debugWidth = maxX / 4