Have showbuildenv only indent non-blank lines.

[nmh] / tools / showbuildenv

diff --git a/tools/showbuildenv b/tools/showbuildenv
index e12bfe3..f5b4b3f 100755 (executable)
--- a/tools/showbuildenv
+++ b/tools/showbuildenv
@@ -11,8 +11,9 @@
 # environment.
 
 offset () {
-    sed -e 's/^/    /'
+    sed -e '/./s/^/    /'
 }
+
 header () {
     echo
     echo $*