Make patterns with uppercase letters work.

Problem reported by Bjarni Ingi Gislason <bjarniig@rhi.hi.is>.

* src/roff/troff/input.cpp (init_hpf_code_table): Use `cmlower'.
* doc/groff.texinfo, man/groff_diff.man: Update documentation of
`hpfcode' request.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/roff/troff/input.cpp b/src/roff/troff/input.cpp
index 7c816e83..5335c1ce 100644
--- a/src/roff/troff/input.cpp
+++ b/src/roff/troff/input.cpp
@@ -6602,7 +6602,7 @@ static void init_charset_table()
 static void init_hpf_code_table()
 {
   for (int i = 0; i < 256; i++)
-    hpf_code_table[i] = i;
+    hpf_code_table[i] = cmlower(i);
 }
 
 static void do_translate(int translate_transparent, int translate_input)