Subject: [PATCH] Fix header encoding when building with --disable-nls.

With disabled NLS, msmtp now assumes that UTF-8 is the current codeset,
which is a better guess than ASCII, which is what nl_langinfo() returns.

This fixes github issue #203.
---
URL: https://github.com/marlam/msmtp/commit/c6baa5b39e811ea4459a35ae0de88163f65bf8a2
---
 src/tools.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/tools.c b/src/tools.c
index b65b4c5..9d78fc8 100644
--- a/src/tools.c
+++ b/src/tools.c
@@ -1012,7 +1012,13 @@ char *encode_for_header(const char *s)
         size_t b64_s_len = BASE64_LENGTH(s_len);
         char* encoding =
 #ifdef HAVE_LANGINFO_H
+            /* With disabled NLS, nl_langinfo() always seems to return
+             * ANSI_X3.4-1968 (i.e. ASCII). We want to assume UTF-8 instead. */
+# ifdef ENABLE_NLS
                 nl_langinfo(CODESET);
+# else
+                "UTF-8";
+# endif
 #else
 # ifdef W32_NATIVE
                 w32_langinfo_codeset();