From c50d4c34d80a051ccb381301324cd3472902b363 Mon Sep 17 00:00:00 2001
From: Tony Lawrence <al20878@gmail.com>
Date: Sat, 22 Oct 2022 20:02:23 -0400
Subject: [PATCH] Avoid using (char) in <ctype.h> macros (#61)

---
 src/complete.c |  4 ++--
 src/editline.c | 12 ++++++------
 2 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/src/complete.c b/src/complete.c
index d78406e..c443270 100644
--- a/src/complete.c
+++ b/src/complete.c
@@ -278,7 +278,7 @@ static char *rl_find_token(size_t *len)
     int pos;
 
     for (pos = rl_point; pos < rl_end; pos++) {
-	if (isspace(rl_line_buffer[pos])) {
+	if (isspace((unsigned char) rl_line_buffer[pos])) {
 	    if (pos > 0)
 		pos--;
 	    break;
@@ -286,7 +286,7 @@ static char *rl_find_token(size_t *len)
     }
 
     ptr = &rl_line_buffer[pos];
-    while (pos >= 0 && !isspace(rl_line_buffer[pos])) {
+    while (pos >= 0 && !isspace((unsigned char) rl_line_buffer[pos])) {
 	if (pos == 0)
 	    break;
 
diff --git a/src/editline.c b/src/editline.c
index 190dd0b..2ed8086 100644
--- a/src/editline.c
+++ b/src/editline.c
@@ -494,10 +494,10 @@ static el_status_t do_case(el_case_t type)
 
         for (i = rl_point, p = &rl_line_buffer[i]; rl_point < end; p++) {
             if ((type == TOupper) || (type == TOcapitalize && rl_point == i)) {
-                if (islower(*p))
-                    *p = toupper(*p);
-            } else if (isupper(*p)) {
-                *p = tolower(*p);
+                if (islower((unsigned char)(*p)))
+                    *p = toupper((unsigned char)(*p));
+            } else if (isupper((unsigned char)(*p))) {
+                *p = tolower((unsigned char)(*p));
             }
             right(CSmove);
         }
@@ -1875,14 +1875,14 @@ static int argify(char *line, char ***avp)
     if (!p)
         return 0;
 
-    for (c = line; isspace(*c); c++)
+    for (c = line; isspace((unsigned char)(*c)); c++)
         continue;
 
     if (*c == '\n' || *c == '\0')
         return 0;
 
     for (ac = 0, p[ac++] = c; *c && *c != '\n'; ) {
-        if (!isspace(*c)) {
+        if (!isspace((unsigned char)(*c))) {
             c++;
             continue;
         }