Make Sublime Text LaTex Completion Work with Markdown

When I use Sublime Text to edit Markdown files, I appreciate the Syntax Highlight provided by Markdown Light plugin, but just like built-in and other Markdown plugins, they can’t provide auto completion for embedded LaTex statements in Markdown files. But it’s very common nowadays to mix various branches of Markdown with LaTex-like math equations, it will ease my pain if I can have LaTex auto completion when editing Markdown files.

Here is the simple solution:

1 Install LaTexBox plugin, which gives us LaTex auto completion.

2 Modify /Packages/LaTeXBox/auto_complete.py, like this.

# Line 18
# Before
def on_query_completions(self, view, prefix, locations):
    if not view.match_selector(locations[0], "text.tex.latex"):
        return None
# After
def on_query_completions(self, view, prefix, locations):
    if not ( view.match_selector(locations[0], "text.tex.latex") or view.match_selector(locations[0], "text.html.markdown")):
        return None
# Line 38
# Before
if view.match_selector(locations[0], "meta.environment.math"):
    r = r + math_commands
# After
if view.match_selector(locations[0], "meta.environment.math") or \
    view.match_selector(locations[0], "text.html.markdown"):
    r = r + math_commands

Explanation:

These two modifications expand the processing scope from tex to tex and markdown, and guarantee LaTex syntax will also get auto completion in Markdown files.

Using similar method, you can mix auto completion of any multiple syntaxes. (Caveat: you can’t mix Syntax Highlight in this way)