Fix portability problem in techo() - st - Personal fork of st
 (HTM) git clone git://git.drkhsh.at/st.git
 (DIR) Log
 (DIR) Files
 (DIR) Refs
 (DIR) README
 (DIR) LICENSE
       ---
 (DIR) commit 6530025bcaf3a65083667a93ae50035bd7137bae
 (DIR) parent d4a17316d33f3c5a0017d7fe6e7e174883ccaa97
 (HTM) Author: Roberto E. Vargas Caballero <k0ga@shike2.com>
       Date:   Fri, 15 Aug 2014 14:48:16 +0200
       
       Fix portability problem in techo()
       
       ISCONTROL chechks if a value is between 0 and 0x1f or
       between 0x80 and 0x9f. Char signess depends of architecture
       and compiler, so in some environment the second case is
       always false (and wrong), Techo() calls ISCONTROL with a
       char variable, whose type cannot be changed because tpuc()
       expects a pointer to char, so the solution is to insert a
       cast in the call to ISCONTROL.
       
       Diffstat:
         M st.c                                |       4 ++--
       
       1 file changed, 2 insertions(+), 2 deletions(-)
       ---
 (DIR) diff --git a/st.c b/st.c
       @@ -2311,13 +2311,13 @@ techo(char *buf, int len) {
                for(; len > 0; buf++, len--) {
                        char c = *buf;
        
       -                if(ISCONTROL(c)) { /* control code */
       +                if(ISCONTROL((uchar) c)) { /* control code */
                                if(c & 0x80) {
                                        c &= 0x7f;
                                        tputc("^", 1);
                                        tputc("[", 1);
                                } else if(c != '\n' && c != '\r' && c != '\t') {
       -                                c ^= '\x40';
       +                                c ^= 0x40;
                                        tputc("^", 1);
                                }
                                tputc(&c, 1);