top: enable alternate '+' placement with collapsed pid

Currently, except for tasks that have no parents, when
a process' children are collapsed the '+' indicator is
shown in the first position within that COMMAND field.

This commit simply provides for indenting the '+' char
so it displays next to that program name/command line.

Signed-off-by: Jim Warner <james.warner@comcast.net>

top/top.c

@@ -4418,7 +4418,11 @@ static inline const char *forest_colour (const WIN_t *q, struct pids_stack *p) {
    if (q == Curwin)            // note: the following is NOT indented
 #endif
    if (rSv_Hid == 'x') {
+#ifdef TREE_VALTMRK
+      snprintf(buf, sizeof(buf), "%*s%s", (4 * rSv_Lvl), "`+ ", which);
+#else
       snprintf(buf, sizeof(buf), "+%*s%s", ((4 * rSv_Lvl) - 1), "`- ", which);
+#endif
       return buf;
    }
    if (rSv_Lvl > 100) snprintf(buf, sizeof(buf), "%400s%s", " +  ", which);

top/top.h

@@ -48,6 +48,7 @@
 //#define TERMIOS_ONLY            /* just limp along with native input only  */
 //#define TREE_NORESET            /* sort keys do NOT force forest view OFF  */
 //#define TREE_SCANALL            /* rescan array w/ forest view, avoid sort */
+//#define TREE_VALTMRK            /* use an indented '+' with collapsed pids */
 //#define TREE_VCPUOFF            /* a collapsed parent excludes child's cpu */
 //#define TREE_VPROMPT            /* pid collapse/expand prompt, vs. top row */
 //#define TREE_VWINALL            /* pid collapse/expand impacts all windows */