Fix value() context lookup for bundled gems

Author: nurse

mrblib/rmake/util.rb

@@ -477,6 +477,9 @@ def self.eval_func(func, args, vars, ctx)
         return words.uniq.sort.join(" ")
       when "value"
         name = expand(args.to_s, vars, ctx)
+        if ctx && ctx.key?(name)
+          return (ctx[name] || "").to_s
+        end
         var = vars[name]
         return var ? var.value.to_s : ""
       when "flavor"

test/run.rb

@@ -226,6 +226,17 @@ def with_env(key, value)
   assert("shell output keeps leading ws, replaces newlines", out == " a b")
 end
 
+tests << lambda do
+  ev = parse_eval(<<~MK)
+    bundled-gems-rev := net-imap|0.6.2|rev123|https://example/repo
+    foreach-bundled-gems-rev = $(foreach g,$(bundled-gems-rev),$(call foreach-bundled-gems-rev-0,$(1),$(subst |, ,$(value g))))
+    foreach-bundled-gems-rev-0 = $(call $(1),$(word 1,$(2)),$(word 2,$(2)),$(word 3,$(2)),$(word 4,$(2)))
+    bundled-gem-gemspec = gems/src/$(1)/$(1).gemspec
+  MK
+  out = RMake::Util.expand("$(call foreach-bundled-gems-rev,bundled-gem-gemspec)", ev.vars)
+  assert("value() sees foreach variable from context", out == "gems/src/net-imap/net-imap.gemspec")
+end
+
 tests << lambda do
   Dir.mktmpdir("rmake-test-") do |dir|
     bin = File.join(dir, "bin")