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-rw-r--r--lib/mkmf.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/mkmf.rb b/lib/mkmf.rb
index c72388ab6..497a14424 100644
--- a/lib/mkmf.rb
+++ b/lib/mkmf.rb
@@ -1248,7 +1248,7 @@ site-install-rb: install-rb
suffixes << m[1] << m[2]
implicit = [[m[1], m[2]], [m.post_match]]
next
- elsif RULE_SUBST and /\A[$\w][^#]*:/ =~ line
+ elsif RULE_SUBST and /\A(?!\s*\w+\s*=)[$\w][^#]*:/ =~ line
line.gsub!(%r"(?<=\s)(?!\.)([^$(){}+=:\s\/\\,]+)(?=\s|\z)") {|*m| RULE_SUBST % m}
end
depout << line