Show signal name when process exits rather than number.

server-fn.c

@@ -334,8 +334,8 @@ server_destroy_pane(struct window_pane *wp, int notify)
 			    tim);
 		} else if (WIFSIGNALED(wp->status)) {
 			screen_write_nputs(&ctx, -1, &gc,
-			    "Pane is dead (signal %d, %s)",
-			    WTERMSIG(wp->status),
+			    "Pane is dead (signal %s, %s)",
+			    sig2name(WTERMSIG(wp->status)),
 			    tim);
 		}
 

tmux.c

@@ -28,6 +28,7 @@
 #include <locale.h>
 #include <paths.h>
 #include <pwd.h>
+#include <signal.h>
 #include <stdlib.h>
 #include <string.h>
 #include <time.h>
@@ -167,6 +168,17 @@ setblocking(int fd, int state)
 	}
 }
 
+const char *
+sig2name(int signo)
+{
+     static char	s[11];
+
+     if (signo > 0 && signo < NSIG)
+	     return (sys_signame[signo]);
+     xsnprintf(s, sizeof s, "%d", signo);
+     return (s);
+}
+
 const char *
 find_cwd(void)
 {

tmux.h

@@ -1725,6 +1725,7 @@ extern int		 ptm_fd;
 extern const char	*shell_command;
 int		 checkshell(const char *);
 void		 setblocking(int, int);
+const char	*sig2name(int);
 const char	*find_cwd(void);
 const char	*find_home(void);
 const char	*getversion(void);