Trim leading whitespace when creating a new Makefile

tstromberg · tstromberg · commit 8ea1f2f6ceae · 2021-09-10T11:21:45.000-07:00
Signed-off-by: Thomas Stromberg &lt;t+github@stromberg.org&gt;
diff --git a/Makefile b/Makefile
@@ -1,4 +1,3 @@
-
 # BEGIN: lint-install .
 # http://github.com/tinkerbell/lint-install
 
diff --git a/lint-install.go b/lint-install.go
@@ -122,7 +122,10 @@ func updateMakefile(root string, cfg Config, dryRun bool) (string, error) {
 		proposed = append(proposed, newRules.Bytes()...)
 	}
 
-	// trim any accidental trailing newlines
+	// Trim extraneous newlines
+	if len(existing) == 0 {
+		proposed = bytes.TrimLeft(proposed, "\n")
+	}
 	proposed = bytes.TrimRight(proposed, "\n")
 	proposed = append(proposed, byte('\n'))
 

Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,3 @@`
`1`		`-`
`2`	`1`	`# BEGIN: lint-install .`
`3`	`2`	`# http://github.com/tinkerbell/lint-install`
`4`	`3`