diff options
Diffstat (limited to 'tex/context/base/mkiv/spac-ver.lua')
| -rw-r--r-- | tex/context/base/mkiv/spac-ver.lua | 38 |
1 files changed, 31 insertions, 7 deletions
diff --git a/tex/context/base/mkiv/spac-ver.lua b/tex/context/base/mkiv/spac-ver.lua index 9a439e5c2..f1f5757b7 100644 --- a/tex/context/base/mkiv/spac-ver.lua +++ b/tex/context/base/mkiv/spac-ver.lua @@ -126,6 +126,7 @@ local skipcodes = nodes.skipcodes local penalty_code = nodecodes.penalty local kern_code = nodecodes.kern local glue_code = nodecodes.glue +local insert_code = nodecodes.ins local hlist_code = nodecodes.hlist local vlist_code = nodecodes.vlist local localpar_code = nodecodes.localpar @@ -1957,14 +1958,37 @@ function vspacing.collapsevbox(n,aslist) -- for boxes but using global a_snapmet end -- This one is needed to prevent bleeding of prevdepth to the next page --- which doesn't work well with forced skips. - -local outer = texnest[0] - -function vspacing.resetprevdepth() - if texlists.hold_head then - outer.prevdepth = 0 +-- which doesn't work well with forced skips. I'm not that sure if the +-- following is a good way out. + +do + + local outer = texnest[0] + local reset = true + local trace = false + local report = logs.reporter("vspacing") + + directives.register("vspacing.resetprevdepth",function(v) reset = v end) + trackers.register ("vspacing.resetprevdepth",function(v) trace = v end) + + function vspacing.resetprevdepth() + if reset then + local head = texlists.hold_head + local skip = 0 + while head and head.id == insert_code do + head = head.next + skip = skip + 1 + end + if head then + outer.prevdepth = 0 + end + if trace then + report("prevdepth %s at page %i, skipped %i, value %p", + head and "reset" or "kept",tex.getcount("realpageno"),skip,outer.prevdepth) + end + end end + end -- interface |