patch 8.0.0848: using multiple ch_log functions is clumsy
Problem: Using multiple ch_log functions is clumsy.
Solution: Use variable arguments. (Ozaki Kiichi, closes #1919)
diff --git a/src/proto/channel.pro b/src/proto/channel.pro
index 0727b8c..6cd099e 100644
--- a/src/proto/channel.pro
+++ b/src/proto/channel.pro
@@ -1,9 +1,7 @@
/* channel.c */
void ch_logfile(char_u *fname, char_u *opt);
int ch_log_active(void);
-void ch_log(channel_T *ch, char *msg);
-void ch_logn(channel_T *ch, char *msg, int nr);
-void ch_logs(channel_T *ch, char *msg, char *name);
+void ch_log(channel_T *ch, const char *fmt, ...);
channel_T *add_channel(void);
int has_any_channel(void);
int channel_unref(channel_T *channel);