diff options
Diffstat (limited to 'tex/context/base/mkiv/typo-dir.lua')
| -rw-r--r-- | tex/context/base/mkiv/typo-dir.lua | 33 |
1 files changed, 22 insertions, 11 deletions
diff --git a/tex/context/base/mkiv/typo-dir.lua b/tex/context/base/mkiv/typo-dir.lua index 5ecf77a1f..7fbf5f6d3 100644 --- a/tex/context/base/mkiv/typo-dir.lua +++ b/tex/context/base/mkiv/typo-dir.lua @@ -28,7 +28,6 @@ if not modules then modules = { } end modules ['typo-dir'] = { local next, type = next, type local format, insert, sub, find, match = string.format, table.insert, string.sub, string.find, string.match -local formatters = string.formatters local nodes, node = nodes, node @@ -36,14 +35,19 @@ local trace_textdirections = false trackers.register("typesetters.directions.t local trace_mathdirections = false trackers.register("typesetters.directions.math", function(v) trace_mathdirections = v end) local trace_directions = false trackers.register("typesetters.directions", function(v) trace_textdirections = v trace_mathdirections = v end) +local one_too = false directives.register("typesetters.directions.onetoo", function(v) one_too = v end) + local report_textdirections = logs.reporter("typesetting","text directions") ----- report_mathdirections = logs.reporter("typesetting","math directions") -local hasbit = number.hasbit +local band = bit32.band local texsetattribute = tex.setattribute local unsetvalue = attributes.unsetvalue +local getnext = nodes.getnext +local getattr = nodes.getattr + local enableaction = nodes.tasks.enableaction local tracers = nodes.tracers local setcolor = tracers.colors.set @@ -62,9 +66,9 @@ local v_local = variables["local"] local v_on = variables.on local v_yes = variables.yes -local m_enabled = 2^6 -- 64 -local m_global = 2^7 -local m_fences = 2^8 +local m_enabled = 0x00000040 -- 2^6 64 +local m_global = 0x00000080 -- 2^7 +local m_fences = 0x00000100 -- 2^8 local handlers = { } local methods = { } @@ -107,11 +111,11 @@ local function tomode(specification) end local function getglobal(a) - return a and a > 0 and hasbit(a,m_global) + return a and a > 0 and band(a,m_global) ~= 0 end local function getfences(a) - return a and a > 0 and hasbit(a,m_fences) + return a and a > 0 and band(a,m_fences) ~= 0 end local function getmethod(a) @@ -155,11 +159,18 @@ local enabled = false local starttiming = statistics.starttiming local stoptiming = statistics.stoptiming -function directions.handler(head) -- ,_,_,_,direction) -- nodes not nuts | 5th arg is direction - if not head.next then +-- If we have hbox{!} then the hbox determines the direction but we can consider +-- a fast analysis, not that it matters much because there's nothing to swap in +-- the list unless one glyphs becomes multiple (can that really happen?). +-- +-- \enabledirectives[typesetters.directions.onetoo] + +function directions.handler(head,_,_,_,direction) + local only_one = not getnext(head) + if only_one and not one_too then return head, false end - local attr = head[a_directions] + local attr = getattr(head,a_directions) if not attr or attr == 0 then return head, false end @@ -169,7 +180,7 @@ function directions.handler(head) -- ,_,_,_,direction) -- nodes not nuts | 5th a return head, false end starttiming(directions) - local head, done = handler(head) + local head, done = handler(head,direction,only_one) stoptiming(directions) return head, done end |