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    commit 6530025bcaf3a65083667a93ae50035bd7137bae
    parent d4a17316d33f3c5a0017d7fe6e7e174883ccaa97
    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:
    Mst.c | 4++--

    1 file changed, 2 insertions(+), 2 deletions(-)
    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);