avoid potential UB when using isprint() - st - Personal fork of st
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       ---
 (DIR) commit af3bb68add1c40d19d0dee382009e21b0870a38f
 (DIR) parent 2aefa348baf4b702fdce98eb105bcba175d8283f
 (HTM) Author: NRK <nrk@disroot.org>
       Date:   Fri, 18 Mar 2022 16:20:54 +0600
       
       avoid potential UB when using isprint()
       
       all the ctype.h functions' argument must be representable as an unsigned
       char or as EOF, otherwise the behavior is undefined.
       
       Diffstat:
         M st.c                                |       2 +-
       
       1 file changed, 1 insertion(+), 1 deletion(-)
       ---
 (DIR) diff --git a/st.c b/st.c
       @@ -367,7 +367,7 @@ static const char base64_digits[] = {
        char
        base64dec_getc(const char **src)
        {
       -        while (**src && !isprint(**src))
       +        while (**src && !isprint((unsigned char)**src))
                        (*src)++;
                return **src ? *((*src)++) : '=';  /* emulate padding if string ends */
        }