Merge branch 'aw/contrib-subtree-doc-asciidoctor' into maint

diff --git a/compat/winansi.c b/compat/winansi.c
index 793420f9d0d7732cb7dc2aa94845a22086fe7021..a11a0f16d276470381587236ae513994d92af477 100644 (file)
--- a/compat/winansi.c
+++ b/compat/winansi.c
@@ -105,6 +105,13 @@ static int is_console(int fd)
        if (!fd) {
                if (!GetConsoleMode(hcon, &mode))
                        return 0;
+               /*
+                * This code path is only reached if there is no console
+                * attached to stdout/stderr, i.e. we will not need to output
+                * any text to any console, therefore we might just as well
+                * use black as foreground color.
+                */
+               sbi.wAttributes = 0;
        } else if (!GetConsoleScreenBufferInfo(hcon, &sbi))
                return 0;
 
@@ -133,6 +140,11 @@ static void write_console(unsigned char *str, size_t len)
 
        /* convert utf-8 to utf-16 */
        int wlen = xutftowcsn(wbuf, (char*) str, ARRAY_SIZE(wbuf), len);
+       if (wlen < 0) {
+               wchar_t *err = L"[invalid]";
+               WriteConsoleW(console, err, wcslen(err), &dummy, NULL);
+               return;
+       }
 
        /* write directly to console */
        WriteConsoleW(console, wbuf, wlen, &dummy, NULL);