Debug: support printing strings with embedded NULs

diff --git a/src/src/string.c b/src/src/string.c
index 5583d93de8714117d2965db806f361a6a3115294..1ac837abeceded4986878cec3ae50fff5e3e11f7 100644 (file)
--- a/src/src/string.c
+++ b/src/src/string.c
@@ -1630,13 +1630,14 @@ while (*fp)
        {
        gstring * zg = NULL;
        int p = precision;
-       for ( ; *s; s++)
-         {
-         /* Take a given precision as applying to the input; expand
-         it for the transformed result */
 
-         if (p >= 0 && --p < 0) break;
-         switch (*s)
+       /* If a precision was given, we can handle embedded NULs. Take it as
+       applying to the input and expand it for the transformed result */
+
+       for ( ; precision >= 0 || *s; s++)
+         if (p >= 0 && --p < 0)
+           break;
+         else switch (*s)
            {
            case ' ':
              zg = string_catn(zg, CUS UTF8_LIGHT_SHADE, 3);
@@ -1658,7 +1659,6 @@ while (*fp)
                zg = string_catn(zg, CUS s, 1);
              break;
            }
-         }
        if (zg) { s = CS zg->s; slen = gstring_length(zg); }
        else    { s = "";       slen = 0; }
        }