There are two places that mfact can be set:
- In the mfact global, which is defined at compile time and passed
into m->mfact during monitor setup. No bounds checks are performed,
but the comment alongside it says that valid values are [0.05..0.95]:
static const float mfact = 0.55; /* factor of master area size [0.05..0.95] */
- By setmfact, which adjusts m->mfact at runtime. It also does some
minimum and maximum bounds checks, allowing [0.1..0.9]. Values outside
of that range are ignored, and mfact is not adjusted.
These different thresholds mean that one cannot setmfact 0.95 or 0.05,
despite the comment above that lists the legal range for mfact.
Clarify this by enforcing the same bounds in setmfact at runtime as
those listed for mfact at compile time.
---
dwm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/dwm.c b/dwm.c
index 4465af1..41c6767 100644
--- a/dwm.c
+++ b/dwm.c
_AT_@ -1520,7 +1520,7 @@ setmfact(const Arg *arg)
if (!arg || !selmon->lt[selmon->sellt]->arrange)
return;
f = arg->f < 1.0 ? arg->f + selmon->mfact : arg->f - 1.0;
- if (f < 0.1 || f > 0.9)
+ if (f < 0.05 || f > 0.95)
return;
selmon->mfact = f;
arrange(selmon);
--
2.26.1
Received on Mon Apr 20 2020 - 17:41:52 CEST