diff options
Diffstat (limited to 'metapost/context/base/mpxl/mp-apos.mpxl')
| -rw-r--r-- | metapost/context/base/mpxl/mp-apos.mpxl | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/metapost/context/base/mpxl/mp-apos.mpxl b/metapost/context/base/mpxl/mp-apos.mpxl index a64229715..021edfc79 100644 --- a/metapost/context/base/mpxl/mp-apos.mpxl +++ b/metapost/context/base/mpxl/mp-apos.mpxl @@ -263,6 +263,9 @@ def anch_box_arrows_draw = skip := (not spanpages) and ((mpvars("span")) = "yes") ; if skip : % we skip the second just in case + elseif alternative = "" : + message("invalid alternative in draw box arrow"); + skip := true; elseif alternative = "bottom" : ff := (xpart f, min(ypart f, ypart t)) ; tt := (xpart t, ypart ff) ; |