Use \seqsplit for DOIs to avoid awkward spacing

extension.py

@@ -14,9 +14,11 @@ def setup(app):
 	app.add_role('subref', SubRefRole())
 	app.add_role('msubref', MSubRefRole())
 	
-	#app.add_source_parser(PORSTParser, override=True)
+	app.add_source_parser(PORSTParser, override=True)
 
+# ===================================================================
 # HTML Builder
+# ===================================================================
 
 from sphinx.builders.html import StandaloneHTMLBuilder
 from sphinx.environment.adapters.toctree import TocTree
@@ -85,7 +87,9 @@ def _TocTree_resolve(self, *args, **kwargs):
 	return result
 TocTree.resolve = _TocTree_resolve
 
+# ===================================================================
 # LaTeX Builder
+# ===================================================================
 
 from sphinx.builders.latex import LaTeXBuilder
 from sphinx.writers.latex import LaTeXTranslator
@@ -114,6 +118,8 @@ class POLaTeXTranslator(LaTeXTranslator):
 			self.body.append(r'{{\small\bfseries\sffamily[{0}]}} '.format(self.paragraph_num))
 	
 	def visit_reference(self, node):
+		uri = node.get('refuri', '')
+		
 		if 'po_mref' in node.attributes:
 			# Force page reference
 			self.builder.config.latex_show_pagerefs = True
@@ -122,10 +128,35 @@ class POLaTeXTranslator(LaTeXTranslator):
 		else:
 			super().visit_reference(node)
 		
+		if '://doi.org/' in uri:
+			# Fix formatting of DOI references
+			self.body.append('\\seqsplit{')
+	
+	def depart_reference(self, node):
+		uri = node.get('refuri', '')
+		if '://doi.org/' in uri:
+			# Fix formatting of DOI references
+			self.body.append('}')
+		
+		super().depart_reference(node)
+
 class POLaTeXBuilder(LaTeXBuilder):
 	default_translator_class = POLaTeXTranslator
 
+# Don't escape "-"
+
+import sphinx.util.texescape
+sphinx.util.texescape.ascii_tex_replacements.remove(('-', r'\sphinxhyphen{}'))
+
+__texescape_init = sphinx.util.texescape.init
+def _texescape_init():
+	__texescape_init()
+	del sphinx.util.texescape._tex_escape_map_without_unicode[ord('-')]
+sphinx.util.texescape.init = _texescape_init
+
+# ===================================================================
 # Epub3 Builder
+# ===================================================================
 
 from sphinx.builders.epub3 import Epub3Builder
 
@@ -142,7 +173,9 @@ class POEpub3Builder(Epub3Builder):
 			'text': 'Index'
 		})
 
+# ===================================================================
 # Referencing roles
+# ===================================================================
 
 from sphinx.roles import XRefRole
 
@@ -248,14 +281,14 @@ def _StandardDomain_resolve_doc_xref(self, env, fromdocname, builder, typ, targe
 	return result
 StandardDomain._resolve_doc_xref = _StandardDomain_resolve_doc_xref
 
-# RST Parser
+# ===================================================================
+# RST Parser (unused)
+# ===================================================================
 
 from sphinx.parsers import RSTParser
 
 class PORSTParser(RSTParser):
-	def parse(self, inputstring, document):
-		super().parse(inputstring, document)
+	pass
 	
-		# Verify footnotes
-		
-		print(document)
+	#def parse(self, inputstring, document):
+	#	super().parse(inputstring, document)