repoquery: Allow uppercased query tags

Before v4.15.0, query tags could be specified as both uppercased or
lowercased. As part of commit e50488b ("repoquery: Properly sanitize
queryformat strings"), this was (I believe) unintentionally changed to
only support the lowercase variant.

Although the documented supported tags are lowercase (as printed by
`dnf repoquery --querytags`), it's clear that the intention here is to
mirror rpm's query tags APIs. Confusingly, the canonical tag names for
the latter are uppercased (as printed by `rpm --querytags`), though the
lowercase variants are still supported.

Let's restore support for uppercased query tags to match rpm more
closely and unbreak anyone who assumed this was officially supported.

dnf/cli/commands/repoquery.py

@@ -68,6 +68,7 @@ def rpm2py_format(queryformat):
  def fmt_repl(matchobj):
  fill = matchobj.groups()[0]
  key = matchobj.groups()[1]
+ key = key.lower() # we allow both uppercase and lowercase variants
  if key not in ALLOWED_QUERY_TAGS:
  return brackets(matchobj.group())
  if fill:
@@ -76,7 +77,7 @@ def fmt_repl(matchobj):
  else:
  fill = '<' + fill
  fill = ':' + fill
- return '{0.' + key.lower() + fill + "}"
+ return '{0.' + key + fill + "}"
 
  def brackets(txt):
  return txt.replace('{', '{{').replace('}', '}}')

tests/test_repoquery.py

@@ -125,7 +125,7 @@ class OutputTest(tests.support.TestCase):
  def test_output(self):
  pkg = dnf.cli.commands.repoquery.PackageWrapper(PkgStub())
  fmt = dnf.cli.commands.repoquery.rpm2py_format(
- '%{name}-%{version}-%{release}.%{arch} (%{reponame})')
+ '%{NAME}-%{version}-%{RELEASE}.%{arch} (%{REPONAME})')
  self.assertEqual(fmt.format(pkg), 'foobar-1.0.1-1.f20.x86_64 (@System)')
 
  def test_nonexistant_attr(self):