X-Git-Url: https://git.xinqibao.xyz/st.git/blobdiff_plain/21e0d6e8b8d20903494386e7e6f43201b3761154..33a9a456644ceb235ea6ce61282f3bdce7a8b547:/st.c

diff --git a/st.c b/st.c
index 5f2352a..9e568c6 100644
--- a/st.c
+++ b/st.c
@@ -366,7 +366,8 @@ static const char base64_digits[] = {
 char
 base64dec_getc(const char **src)
 {
-	while (**src && !isprint(**src)) (*src)++;
+	while (**src && !isprint(**src))
+		(*src)++;
 	return **src ? *((*src)++) : '=';  /* emulate padding if string ends */
 }
 
@@ -681,9 +682,12 @@ execsh(char *cmd, char **args)
 	if (args) {
 		prog = args[0];
 		arg = NULL;
-	} else if (scroll || utmp) {
-		prog = scroll ? scroll : utmp;
-		arg = scroll ? utmp : NULL;
+	} else if (scroll) {
+		prog = scroll;
+		arg = utmp ? utmp : sh;
+	} else if (utmp) {
+		prog = utmp;
+		arg = NULL;
 	} else {
 		prog = sh;
 		arg = NULL;
@@ -819,21 +823,26 @@ ttyread(void)
 {
 	static char buf[BUFSIZ];
 	static int buflen = 0;
-	int written;
-	int ret;
+	int ret, written;
 
 	/* append read bytes to unprocessed bytes */
-	if ((ret = read(cmdfd, buf+buflen, LEN(buf)-buflen)) < 0)
-		die("couldn't read from shell: %s\n", strerror(errno));
-	buflen += ret;
+	ret = read(cmdfd, buf+buflen, LEN(buf)-buflen);
 
-	written = twrite(buf, buflen, 0);
-	buflen -= written;
-	/* keep any uncomplete utf8 char for the next call */
-	if (buflen > 0)
-		memmove(buf, buf + written, buflen);
+	switch (ret) {
+	case 0:
+		exit(0);
+	case -1:
+		die("couldn't read from shell: %s\n", strerror(errno));
+	default:
+		buflen += ret;
+		written = twrite(buf, buflen, 0);
+		buflen -= written;
+		/* keep any incomplete UTF-8 byte sequence for the next call */
+		if (buflen > 0)
+			memmove(buf, buf + written, buflen);
+		return ret;
 
-	return ret;
+	}
 }
 
 void