10 files changed, 159 insertions, 7 deletions
diff --git a/Master/texmf-dist/doc/support/make4ht/README b/Master/texmf-dist/doc/support/make4ht/README
index 46b22e5b14f..a99a108d691 100644
--- a/Master/texmf-dist/doc/support/make4ht/README
+++ b/Master/texmf-dist/doc/support/make4ht/README
@@ -134,6 +134,10 @@ common\_domfilters
 `common_filters`. Used DOM filters are `fixinlines`, `idcolons` and
 `joincharacters`.
 
+join\_colors
+
+:    load the `joincolors` domfilter for all HTML files.
+
 mathjaxnode
 
 :    use [mathjax-node-page](https://github.com/pkra/mathjax-node-page/) to
@@ -441,6 +445,13 @@ joincharacters
 
 :  join consecutive `<span>` or `<mn>` elements.
 
+joincolors
+
+:  many `<span>` elements with unique `id` attribute are created when \LaTeX\ colors are being used in the document.
+   CSS rule is added for each of these elements, which may result in
+   substantial grow of the CSS file. This filter replace these rules with a
+   common one for elements with the same color value.
+
 odtimagesize
 
 :  set correct dimensions for images in the ODT format. It is loaded by default for the ODT output.
diff --git a/Master/texmf-dist/doc/support/make4ht/changelog.tex b/Master/texmf-dist/doc/support/make4ht/changelog.tex
index b8d6ea15a0b..0c70be59a7e 100644
--- a/Master/texmf-dist/doc/support/make4ht/changelog.tex
+++ b/Master/texmf-dist/doc/support/make4ht/changelog.tex
@@ -3,15 +3,59 @@
 
 \begin{itemize}
 \item
+  2019/03/21
+
+  \begin{itemize}
+  \tightlist
+  \item
+    version 0.2f released
+  \end{itemize}
+\item
+  2019/03/15
+
+  \begin{itemize}
+  \tightlist
+  \item
+    check for the image dimensions existence in the
+    \texttt{odtimagesize} domfilter.
+  \end{itemize}
+\item
+  2019/03/13
+
+  \begin{itemize}
+  \tightlist
+  \item
+    don't use \texttt{odtimagesize} domfilter in the \texttt{ODT}
+    format, the issue it fixes had been resolved in \texttt{tex4ht}.
+  \end{itemize}
+\item
+  2019/03/08
+
+  \begin{itemize}
+  \tightlist
+  \item
+    use \texttt{\%USERPROFILE} for home dir search on Windows.
+  \end{itemize}
+\item
+  2019/01/28
+
+  \begin{itemize}
+  \tightlist
+  \item
+    added \texttt{joincolors} domfilter and \texttt{join\_colors}
+    extension. It can join CSS rules created for the LaTeX colors and
+    update the HTML file.
+  \end{itemize}
+\item
   2019/01/22
 
   \begin{itemize}
   \tightlist
   \item
+    version 0.2e released
+  \item
     updated the \texttt{odttemplate} filter. It will use styles from the
     generated ODT file that haven't been present in the template file.
-  \item
-    version 0.2e released
   \end{itemize}
 \item
   2019/01/10
diff --git a/Master/texmf-dist/doc/support/make4ht/make4ht-doc.pdf b/Master/texmf-dist/doc/support/make4ht/make4ht-doc.pdf
index 9a767c9cc73..84653d3df82 100644
--- a/Master/texmf-dist/doc/support/make4ht/make4ht-doc.pdf
+++ b/Master/texmf-dist/doc/support/make4ht/make4ht-doc.pdf
diff --git a/Master/texmf-dist/doc/support/make4ht/readme.tex b/Master/texmf-dist/doc/support/make4ht/readme.tex
index bb4fa0e7803..c9fc0a2f3ed 100644
--- a/Master/texmf-dist/doc/support/make4ht/readme.tex
+++ b/Master/texmf-dist/doc/support/make4ht/readme.tex
@@ -168,6 +168,8 @@ clean the output HTML files using filters.
 clean the HTML file using DOM filters. It is more powerful than
 \texttt{common\_filters}. Used DOM filters are \texttt{fixinlines},
 \texttt{idcolons} and \texttt{joincharacters}.
+\item[join\_colors]
+load the \texttt{joincolors} domfilter for all HTML files.
 \item[mathjaxnode]
 use \href{https://github.com/pkra/mathjax-node-page/}{mathjax-node-page}
 to convert from MathML code to HTML + CSS or SVG. See
@@ -463,6 +465,12 @@ replace the colon (\texttt{:}) character in internal links and
 \item[joincharacters]
 join consecutive \texttt{\textless{}span\textgreater{}} or
 \texttt{\textless{}mn\textgreater{}} elements.
+\item[joincolors]
+many \texttt{\textless{}span\textgreater{}} elements with unique
+\texttt{id} attribute are created when \LaTeX~colors are being used in
+the document. CSS rule is added for each of these elements, which may
+result in substantial grow of the CSS file. This filter replace these
+rules with a common one for elements with the same color value.
 \item[odtimagesize]
 set correct dimensions for images in the ODT format. It is loaded by
 default for the ODT output.
diff --git a/Master/texmf-dist/scripts/make4ht/domfilters/make4ht-joincolors.lua b/Master/texmf-dist/scripts/make4ht/domfilters/make4ht-joincolors.lua
new file mode 100644
index 00000000000..1b7a97be0a2
--- /dev/null
+++ b/Master/texmf-dist/scripts/make4ht/domfilters/make4ht-joincolors.lua
@@ -0,0 +1,73 @@
+local cssfiles = {}
+
+
+-- keep mapping between span ids and colors
+local colors = {}
+
+local function extract_colors(csscontent)
+  local used_colors = {}
+  -- delete the color ids and save the used colors
+  csscontent = csscontent:gsub("[%a]*%#(textcolor.-)%s*{%s*color%s*%:%s*(.-)%s*%}%s", function(id, color)
+    -- convert rgb() function to hex value and generate the span name
+    local converted = "textcolor-" .. color:gsub("rgb%((.-),(.-),(.-)%)", function(r,g,b)
+      return string.format("%02x%02x%02x", tonumber(r), tonumber(g), tonumber(b))
+    end)
+    -- save the id and used color
+    colors[id] = converted
+    used_colors[converted] = color
+    return ""
+  end)
+  -- add the used colors to css
+  local t = {}
+  for class, color in pairs(used_colors) do
+    t[#t+1] = string.format(".%s{color:%s;}", class, color)
+  end
+  return csscontent .. table.concat(t, "\n")
+end
+
+local function process_css(cssfile)
+  local f = io.open(cssfile,"r")
+  if not f then return nil, "Cannot open the CSS file: ".. cssfile end
+  local content = f:read("*all")
+  f:close()
+  -- delete color ids and replace them with joined spans
+  local newcontent = extract_colors(content)
+  -- save the updated css file
+  local f=io.open(cssfile, "w")
+  f:write(newcontent)
+  f:close()
+end
+
+
+local function process_css_files(dom)
+  for _, el in ipairs(dom:query_selector("link")) do
+    local href = el:get_attribute("href") or ""
+    if not cssfiles[href] and href:match("css$") then
+      print("Load CSS file ", href)
+      cssfiles[href] = true
+      process_css(href)
+    end
+  end
+
+end
+
+local function join_colors(dom)
+  -- find css files in the current HTML file and join the colors
+  process_css_files(dom)
+  for _, span in ipairs(dom:query_selector("span")) do
+    local id = span:get_attribute("id")
+    if id then
+      -- test if the id is in the saved colors
+      local class = colors[id]
+      if class then
+        -- remove the id
+        span:set_attribute("id", nil)
+        span:set_attribute("class", class)
+      end
+    end
+  end
+
+  return dom
+end
+
+return join_colors
diff --git a/Master/texmf-dist/scripts/make4ht/domfilters/make4ht-odtimagesize.lua b/Master/texmf-dist/scripts/make4ht/domfilters/make4ht-odtimagesize.lua
index 92ce68dee4c..4ce8f0d92ea 100644
--- a/Master/texmf-dist/scripts/make4ht/domfilters/make4ht-odtimagesize.lua
+++ b/Master/texmf-dist/scripts/make4ht/domfilters/make4ht-odtimagesize.lua
@@ -7,8 +7,8 @@ return  function(dom)
       local image = images[1]
       local width = image:get_attribute("svg:width")
       local height = image:get_attribute("svg:height")
-      frame:set_attribute("svg:width", width)
-      frame:set_attribute("svg:height", height)
+      if widht then frame:set_attribute("svg:width", width) end
+      if height then frame:set_attribute("svg:height", height) end
       print("image dimensions", width, height)
     end
   end
diff --git a/Master/texmf-dist/scripts/make4ht/extensions/join_colors.lua b/Master/texmf-dist/scripts/make4ht/extensions/join_colors.lua
new file mode 100644
index 00000000000..182661fbdbc
--- /dev/null
+++ b/Master/texmf-dist/scripts/make4ht/extensions/join_colors.lua
@@ -0,0 +1,16 @@
+local M = {}
+
+local filter = require "make4ht-domfilter"
+
+-- filters support only html formats
+function M.test(format)
+  if format == "odt" then return false end
+  return true
+end
+
+function M.modify_build(make)
+  local process = filter {"joincolors"}
+  make:match("html$", process)
+  return make
+end
+return M
diff --git a/Master/texmf-dist/scripts/make4ht/formats/odt.lua b/Master/texmf-dist/scripts/make4ht/formats/odt.lua
index 453c46aff5e..64b8793e2a7 100644
--- a/Master/texmf-dist/scripts/make4ht/formats/odt.lua
+++ b/Master/texmf-dist/scripts/make4ht/formats/odt.lua
@@ -130,7 +130,7 @@ function M.modify_build(make)
   -- expanded in tex4ht.env in Miktex or Debian
   call_xtpipes(make)
   -- fix the image dimensions wrongly set by xtpipes
-  local domfilters = domfilter {"t4htlinks","odtimagesize"}
+  local domfilters = domfilter {"t4htlinks"}
   make:match("4oo$", domfilters)
   -- execute it before xtpipes, because we don't want xtpipes to mess with t4htlink elements
   move_matches(make)
diff --git a/Master/texmf-dist/scripts/make4ht/make4ht b/Master/texmf-dist/scripts/make4ht/make4ht
index 44c3582134a..ab8e1cfbc6f 100755
--- a/Master/texmf-dist/scripts/make4ht/make4ht
+++ b/Master/texmf-dist/scripts/make4ht/make4ht
@@ -27,7 +27,7 @@ make4ht [options] filename ["tex4ht.sty op." "tex4ht op." "t4ht op" "latex op"]
 
 -- set version number. the template should be replaced by the
 -- actual version number by the build script
-local version = "v0.2e"
+local version = "v0.2f"
 mkparams.version_number = version
 
 local args = mkparams.get_args()
diff --git a/Master/texmf-dist/scripts/make4ht/make4ht-config.lua b/Master/texmf-dist/scripts/make4ht/make4ht-config.lua
index bd83632a574..310f5afd7bf 100755
--- a/Master/texmf-dist/scripts/make4ht/make4ht-config.lua
+++ b/Master/texmf-dist/scripts/make4ht/make4ht-config.lua
@@ -21,7 +21,7 @@ local xdg_config  = function(filename, xdg_config_name)
   local dotfilename = "." .. filename
   local xdg_config_name = xdg_config_name or "config.lua"
   local xdg = os.getenv("XDG_CONFIG_HOME") or ((os.getenv("HOME") or "") ..  "/.config")
-  local home = os.getenv("HOME")
+  local home = os.getenv("HOME") or os.getenv("USERPROFILE")
   if xdg then
     -- filename like ~/.config/make4ht/config.lua
     local fn = make_name{ xdg ,filename , xdg_config_name }