+
+doc: build/html2vimdoc build/vim-tools
+ sed -e '/^\[!\[Build Status\]/d' \
+ -e '/^1\. \[/d' README.md > doc/tmp.md # remove table of contents
+ build/html2vimdoc/bin/python build/vim-tools/html2vimdoc.py -f vim-markdown \
+ doc/tmp.md | \
+ sed -E -e "s/[[:space:]]*$$//" -e "# remove trailing spaces" \
+ -e "/^.{79,}\|$$/ {" -e "# wrap table of contents over 79" \
+ -e "h" -e "# save the matched line to the hold space" \
+ -e "s/^(.*) (\|[^|]*\|)$$/\1/" -e "# make content title" \
+ -e "p" -e "# print title" \
+ -e "g" -e "# restore the matched line" \
+ -e "s/^.* (\|[^|]*\|)$$/ \1/" -e "# make link" \
+ -e ":c" -e "s/^(.{1,78})$$/ \1/" -e "tc" -e "# align right" \
+ -e "}" \
+ -e "/^- '[^']*':( |$$)/ {" \
+ -e "h" -e "# save the matched line to the hold space" \
+ -e "s/^- '([^']{3,})':.*/ \*\1\*/" -e "# make command reference" \
+ -e "s/^- '([^']{1,2})':.*/ \*vim-markdown-\1\*/" -e "# short command" \
+ -e ":a" -e "s/^(.{1,78})$$/ \1/" -e "ta" -e "# align right" \
+ -e "G" -e "# append the matched line after the command reference" \
+ -e "}" \
+ -e "/^- 'g:vim_markdown_[[:alnum:]_]*'$$/ {" \
+ -e "h" -e "# save the matched line to the hold space" \
+ -e "s/^- '([^']*)'$$/ \*\1\*/" -e "# make global variable reference" \
+ -e ":g" -e "s/^(.{1,78})$$/ \1/" -e "tg" -e "# align right" \
+ -e "G" -e "# append the matched line after the global variable reference" \
+ -e "}" > doc/vim-markdown.txt && rm -f doc/tmp.md
+
+.PHONY: doc
+
+# Prerequire Python and virtualenv.
+# $ sudo pip install virtualenv
+# Create the virtual environment.
+# Install the dependencies.
+build/html2vimdoc: | build
+ virtualenv build/html2vimdoc
+ build/html2vimdoc/bin/pip install beautifulsoup coloredlogs==4.0 markdown
+
+build/vim-tools: | build
+ git clone https://github.com/xolox/vim-tools.git build/vim-tools