fts: When indexing header names with lib-fts, add them using "data" language.

diff --git a/src/plugins/fts/fts-build-mail.c b/src/plugins/fts/fts-build-mail.c
index 00f43c668064f71144a551731842d34575b7ea8f..97e08039eabc548ff3c86e13a75600141b3d1ab4 100644 (file)
--- a/src/plugins/fts/fts-build-mail.c
+++ b/src/plugins/fts/fts-build-mail.c
@@ -213,13 +213,18 @@ static int fts_build_mail_header(struct fts_mail_build_context *ctx,
 
        if ((ctx->update_ctx->backend->flags &
             FTS_BACKEND_FLAG_TOKENIZED_INPUT) != 0) {
-               /* index the header name itself */
+               /* index the header name itself using data-language. */
+               struct fts_user_language *prev_lang = ctx->cur_user_lang;
+
+               fts_mail_build_ctx_set_lang(ctx,
+                       fts_user_get_data_lang(ctx->update_ctx->backend->ns->user));
                key.hdr_name = "";
                if (fts_backend_update_set_build_key(ctx->update_ctx, &key)) {
                        if (fts_build_data(ctx, (const void *)hdr->name,
                                           strlen(hdr->name), TRUE) < 0)
                                ret = -1;
                }
+               fts_mail_build_ctx_set_lang(ctx, prev_lang);
        }
        return ret;
 }