fix: arif_rime: prevent rime from logging to stderr

configure.ac

@@ -22,6 +22,7 @@ LT_INIT([dlopen])
 AC_PROG_AWK
 AC_PROG_CC
 AC_PROG_CPP
+AC_PROG_CXX
 AC_PROG_INSTALL
 AC_PROG_LN_S
 AC_PROG_MAKE_SET

examples/Makefile.am

@@ -7,6 +7,7 @@
 #
 
 include_HEADERS =
+noinst_HEADERS  =
 lib_LTLIBRARIES =
 dist_man3_MANS  =
 
@@ -14,12 +15,13 @@ dist_man3_MANS  =
 if BUILD_ARIF_RIME
 
   include_HEADERS += arif_rime.h
+  noinst_HEADERS  += arif_rime_workaround.h
   lib_LTLIBRARIES += libarifrime.la
   dist_man3_MANS  += arif_rime.3
 
   libarifrime_la_CPPFLAGS = $(RIME_CFLAGS) -I$(top_srcdir)/include
   libarifrime_la_LDFLAGS  = -module
   libarifrime_la_LIBADD   = $(RIME_LIBS)
-  libarifrime_la_SOURCES  = arif_rime.c
+  libarifrime_la_SOURCES  = arif_rime.c arif_rime_workaround.cc
 
 endif  # BUILD_ARIF_RIME

examples/arif_rime.c

@@ -39,6 +39,7 @@
 #include <rime_api.h>
 
 #include "arif_defs.h"
+#include "arif_rime_workaround.h"
 
 #ifndef ARIF_RIME_APP_NAME
 #  define ARIF_RIME_APP_NAME  "rime.arif"
@@ -283,6 +284,9 @@ init_rime (void)
     traits.modules       = get_modules("ARIF_RIME_MODULES");
 
     rime_api->setup(&traits);
+    // Prevent glog (used by Rime for logging) from writing to stderr,
+    // since it may break Readline output.
+    arif_rime_workaround_glog_nostderr();
     rime_api->initialize(&traits);
 
     // Rime uses static C++ variables to store its states, which get destroyed

examples/arif_rime_workaround.cc

@@ -0,0 +1,48 @@
+/**
+ * arif/examples/arif_rime_workaround.cc
+ * ----
+ *
+ * Copyright (C) 2023  CismonX <admin@cismon.net>
+ *
+ * This file is part of ARIF, Another Readline Input Framework.
+ *
+ * ARIF is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARIF is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with ARIF.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include "config.h"
+#endif
+
+#include "arif_rime_workaround.h"
+
+// It's better practice to just `#include <glog/logging.h>` here instead.
+// However, we don't want to make glog our dependency just for the sake of
+// this workaround.
+
+namespace fLB {
+    bool FLAGS_alsologtostderr;
+}
+
+namespace fLI {
+    int FLAGS_stderrthreshold;
+}
+
+void
+arif_rime_workaround_glog_nostderr (void)
+{
+    // Rime sets this to true during init
+    fLB::FLAGS_alsologtostderr = false;
+    // default value is ERROR (2) instead of FATAL
+    fLI::FLAGS_stderrthreshold = 3;
+}

examples/arif_rime_workaround.h

@@ -0,0 +1,37 @@
+/**
+ * arif/examples/arif_rime_workaround.h
+ * ----
+ *
+ * Copyright (C) 2023  CismonX <admin@cismon.net>
+ *
+ * This file is part of ARIF, Another Readline Input Framework.
+ *
+ * ARIF is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARIF is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with ARIF.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef ARIF_RIME_WORKAROUND_H_
+#define ARIF_RIME_WORKAROUND_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void
+arif_rime_workaround_glog_nostderr (void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif  // !defined(ARIF_RIME_WORKAROUND_H_)