ExpandSelectionToQuotes.py

import sublime, sublime_plugin

class ExpandSelectionToQuotesCommand(sublime_plugin.TextCommand):
	def run(self, edit):
		double_quotes = list(map(lambda x: x.begin(), self.view.find_all('"')))
		single_quotes = list(map(lambda x: x.begin(), self.view.find_all("'")))
		backtick_quotes = list(map(lambda x: x.begin(), self.view.find_all("`")))

		def search_for_quotes(q_type, quotes):
			q_size, before, after = False, False, False

			if len(quotes) - self.view.substr(sel).count('"') >= 2:
				all_before = list(filter(lambda x: x < sel.begin(), quotes))
				all_after = list(filter(lambda x: x >= sel.end(), quotes))

				if all_before: before = all_before[-1]
				if all_after: after = all_after[0]

				if all_before and all_after: q_size = after - before

			return q_size, before, after

		def replace_region(start, end):
			if sel.size() < end-start-2:
				start += 1; end -= 1
			self.view.sel().subtract(sel)
			self.view.sel().add(sublime.Region(start, end))

		for sel in self.view.sel():

			d_size, d_before, d_after = search_for_quotes('"', double_quotes)
			s_size, s_before, s_after = search_for_quotes("'", single_quotes)
			b_size, b_before, b_after = search_for_quotes("`", backtick_quotes)


			if d_size and (not s_size or d_size < s_size) and (not b_size or d_size < b_size):
				replace_region(d_before, d_after+1)
			elif s_size and (not d_size or s_size < d_size) and (not b_size or s_size < b_size):
				replace_region(s_before, s_after+1)
			elif b_size and (not d_size or b_size < d_size) and (not s_size or b_size < s_size):
				replace_region(b_before, b_after+1)