babel-latin (28jun21)

git-svn-id: svn://tug.org/texlive/trunk@59736 c570f23f-e606-0410-a88d-b1316a301751

3 files changed, 271 insertions, 0 deletions

diff --git a/Master/texmf-dist/doc/generic/babel-latin/README b/Master/texmf-dist/doc/generic/babel-latin/README
new file mode 100644
index 00000000000..444ae8be1cb
--- /dev/null
+++ b/Master/texmf-dist/doc/generic/babel-latin/README
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+The babel-latin package provides the babel languages latin, classiclatin,
+medievallatin and ecclesiasticlatin.
+
+Package author: C. Beccari
+Current maintainer: K. Wehr
+Version: 4.0
+Date: 27th June 2021
+Bug tracker: https://github.com/wehro/babel-latin/issues
+
+The babel-latin package is subject to the LaTeX Project Public License,
+version 1.3 or later.
diff --git a/Master/texmf-dist/doc/generic/babel-latin/ecclesiasticlatin.lua b/Master/texmf-dist/doc/generic/babel-latin/ecclesiasticlatin.lua
new file mode 100644
index 00000000000..5777c6d07fb
--- /dev/null
+++ b/Master/texmf-dist/doc/generic/babel-latin/ecclesiasticlatin.lua
@@ -0,0 +1,260 @@
+--
+-- This is file `ecclesiasticlatin.lua',
+-- generated with the docstrip utility.
+--
+-- The original source files were:
+--
+-- latin.dtx  (with options: `lua')
+-- 
+-- The original version of the following Lua code has been written for the
+-- polyglossia package by É. Roux and others. The code has been adapted for
+-- the babel-latin package by K. Wehr.
+-- 
+-- Copyright (C) 2021      by Keno Wehr
+-- All rights reserved.
+-- 
+-- This file is part of the babel-latin package.
+-- ----------------------------------------------
+-- 
+-- It may be distributed and/or modified under the
+-- conditions of the LaTeX Project Public License, either version 1.3
+-- of this license or (at your option) any later version.
+-- The latest version of this license is in
+--   http://www.latex-project.org/lppl.txt
+-- and version 1.3 or later is part of all distributions of LaTeX
+-- version 2003/12/01 or later.
+-- 
+-- This work has the LPPL maintenance status "maintained".
+-- 
+-- The Current Maintainer of this work is Keno Wehr.
+-- 
+-- Please report errors to: https://github.com/wehro/babel-latin/issues
+-- 
+luatexbase.provides_module({
+    name        = "ecclesiasticlatin",
+    date        = "2021-06-27",
+    version     = "4.0",
+    description = "babel-latin punctuation spacing for ecclesiastic Latin"
+})
+local add_to_callback     = luatexbase.add_to_callback
+local in_callback         = luatexbase.in_callback
+local new_attribute       = luatexbase.new_attribute
+local node                = node
+local insert_node_before  = node.insert_before
+local insert_node_after   = node.insert_after
+local remove_node         = node.remove
+local has_attribute       = node.has_attribute
+local node_copy           = node.copy
+local new_node            = node.new
+local end_of_math         = node.end_of_math
+local get_next            = node.getnext
+local get_prev            = node.getprev
+local get_property        = node.getproperty
+local glue_code    = node.id"glue"
+local glyph_code   = node.id"glyph"
+local penalty_code = node.id"penalty"
+local kern_code    = node.id"kern"
+local math_code    = node.id"math"
+local userkern = 1
+local removable_skip = {
+    [0]  = true, -- userskip
+    [13] = true, -- spaceskip
+    [14] = true  -- xspaceskip
+}
+local kern_node   = new_node(kern_code)
+kern_node.subtype = userkern
+local function get_kern_node(dim)
+    local n = node_copy(kern_node)
+    n.kern = dim
+    return n
+end
+local space_chars = {
+    [0x20] = true,   -- space
+    [0xA0] = true,   -- no-break space
+    [0x1680] = true, -- ogham space mark
+    [0x2000] = true, -- en quad
+    [0x2001] = true, -- em quad
+    [0x2002] = true, -- en space
+    [0x2003] = true, -- em space
+    [0x2004] = true, -- three-per-em-space
+    [0x2005] = true, -- four-per-em space
+    [0x2006] = true, -- six-per-em space
+    [0x2007] = true, -- figure space
+    [0x2008] = true, -- punctuation space
+    [0x2009] = true, -- thin space
+    [0x200A] = true, -- hair space
+    [0x202F] = true, -- narrow no-break space
+    [0x205F] = true, -- medium mathematical space
+    [0x3000] = true  -- ideographic space
+}
+local left_bracket_chars = {
+    [0x28] = true,  -- left parenthesis
+    [0x5B] = true,  -- left square bracket
+    [0x7B] = true,  -- left curly bracket
+    [0x27E8] = true -- mathematical left angle bracket
+}
+local right_bracket_chars = {
+    [0x29] = true,  -- right parenthesis
+    [0x5D] = true,  -- right square bracket
+    [0x7D] = true,  -- right curly bracket
+    [0x27E9] = true -- mathematical right angle bracket
+}
+local question_exclamation_chars = {
+    [0x21] = true,   -- exclamation mark !
+    [0x3F] = true,   -- question mark ?
+    [0x203C] = true, -- double exclamation mark ‼
+    [0x203D] = true, -- interrobang ‽
+    [0x2047] = true, -- double question mark ⁇
+    [0x2048] = true, -- question exclamation mark ⁈
+    [0x2049] = true  -- exclamation question mark ⁉
+}
+local function somespace(n)
+    if n then
+        local id, subtype = n.id, n.subtype
+        if id == glue_code then
+            return removable_skip[subtype]
+        elseif id == kern_code then
+            return subtype == userkern
+        elseif id == glyph_code then
+            return space_chars[n.char]
+        end
+    end
+end
+local function someleftbracket(n)
+    if n then
+        local id = n.id
+        if id == glyph_code then
+            return left_bracket_chars[n.char]
+        end
+    end
+end
+local function somerightbracket(n)
+    if n then
+        local id = n.id
+        if id == glyph_code then
+            return right_bracket_chars[n.char]
+        end
+    end
+end
+local function question_exclamation_sequence(n1, n2)
+    if n1 and n2 then
+        local id1 = n1.id
+        local id2 = n2.id
+        if id1 == glyph_code and id2 == glyph_code then
+            return question_exclamation_chars[n1.char] and question_exclamation_chars[n2.char]
+        end
+    end
+end
+local function somepenalty(n, value)
+    if n then
+        local id = n.id
+        if id == penalty_code then
+            if value then
+                return n.penalty == value
+            else
+                return true
+            end
+        end
+    end
+end
+local punct_attr = new_attribute("ecclesiasticlatin_punct")
+local left_space  = {}
+local right_space = {}
+local function process(head)
+    local current = head
+    while current do
+        local id = current.id
+        if id == glyph_code then
+            if has_attribute(current, punct_attr) then
+                local char = get_property(current) and get_property(current).glyph_info
+                if not char and current.char <= 0x10FFFF then
+                    char = utf8.char(current.char)
+                end
+                local leftspace, rightspace
+                if char then
+                    leftspace  = left_space[char]
+                    rightspace = right_space[char]
+                end
+                if leftspace or rightspace then
+                    local fontparameters = fonts.hashes.parameters[current.font]
+                    local spacing_node
+                    if leftspace and fontparameters then
+                        local prev = get_prev(current)
+                        local space_exception = false
+                        if prev then
+                            space_exception = someleftbracket(prev)
+                                              or question_exclamation_sequence(prev, current)
+                            while somespace(prev) do
+                                head = remove_node(head, prev)
+                                prev = get_prev(current)
+                            end
+                            if somepenalty(prev, 10000) then
+                                head = remove_node(head, prev)
+                            end
+                        end
+                        spacing_node = get_kern_node(leftspace * fontparameters.quad)
+                        if not space_exception then
+                            head = insert_node_before(head, current, spacing_node)
+                        end
+                    end
+                    if rightspace and fontparameters then
+                        local next = get_next(current)
+                        local space_exception = false
+                        if next then
+                            space_exception = somerightbracket(next)
+                            local nextnext = get_next(next)
+                            if somepenalty(next, 10000) and somespace(nextnext) then
+                                head, next = remove_node(head, next)
+                            end
+                            while somespace(next) do
+                                head, next = remove_node(head, next)
+                            end
+                        end
+                        spacing_node = get_kern_node(rightspace * fontparameters.quad)
+                        if not space_exception then
+                            head, current = insert_node_after(head, current, spacing_node)
+                        end
+                    end
+                end
+            end
+        elseif id == math_code then
+            current = end_of_math(current)
+        end
+        current = get_next(current)
+    end
+    return head
+end
+local hairspace = 0.08333 -- 1/12
+local function space_left(char)
+    left_space[char] = hairspace
+end
+local function space_right(char, kern)
+    right_space[char] = hairspace
+end
+space_left('!')
+space_left('?')
+space_left('‼')
+space_left('⁇')
+space_left('⁈')
+space_left('⁉')
+space_left('‽') -- U+203D (interrobang)
+space_left(':')
+space_left(';')
+space_left('»')
+space_left('›')
+space_right('«')
+space_right('‹')
+local function activate()
+    tex.setattribute(punct_attr, 1)
+    for _, callback_name in ipairs{ "pre_linebreak_filter", "hpack_filter" } do
+        if not in_callback(callback_name, "ecclesiasticlatin-punct.process") then
+            add_to_callback(callback_name, process, "ecclesiasticlatin-punct.process", 1)
+        end
+    end
+end
+local function deactivate()
+    tex.setattribute(punct_attr, -0x7FFFFFFF) -- this value means "unset"
+end
+ecclesiasticlatin = ecclesiasticlatin or {}
+ecclesiasticlatin.activate_spacing   = activate
+ecclesiasticlatin.deactivate_spacing = deactivate
diff --git a/Master/texmf-dist/doc/generic/babel-latin/latin.pdf b/Master/texmf-dist/doc/generic/babel-latin/latin.pdf
index 592b907926a..0c2c5c0e1fb 100644
--- a/Master/texmf-dist/doc/generic/babel-latin/latin.pdf
+++ b/Master/texmf-dist/doc/generic/babel-latin/latin.pdf