From 4bd065f871d5ee318c5f5a4835be025b13ae28e8 Mon Sep 17 00:00:00 2001
From: Juergen Spitzmueller <spitz@lyx.org>
Date: Sun, 10 Mar 2019 13:00:10 +0100
Subject: [PATCH] use revert_language in more cases

---
 lib/lyx2lyx/lyx_2_0.py | 16 ++-------------
 lib/lyx2lyx/lyx_2_1.py | 44 ++++++++++++------------------------------
 lib/lyx2lyx/lyx_2_2.py | 13 +++----------
 3 files changed, 17 insertions(+), 56 deletions(-)

diff --git a/lib/lyx2lyx/lyx_2_0.py b/lib/lyx2lyx/lyx_2_0.py
index 3faf944a97..480971b531 100644
--- a/lib/lyx2lyx/lyx_2_0.py
+++ b/lib/lyx2lyx/lyx_2_0.py
@@ -30,7 +30,7 @@ from parser_tools import del_complete_lines, \
 
 from lyx2lyx_tools import add_to_preamble, insert_to_preamble, \
   put_cmd_in_ert, lyx2latex, latex_length, revert_flex_inset, \
-  revert_font_attrs, hex2ratio, str2bool
+  revert_font_attrs, hex2ratio, str2bool, revert_language
 
 ####################################################################
 # Private helper functions
@@ -1281,19 +1281,7 @@ def revert_notefontcolor(document):
 def revert_turkmen(document):
     "Set language Turkmen to English"
 
-    if document.language == "turkmen":
-        document.language = "english"
-        i = find_token(document.header, "\\language", 0)
-        if i != -1:
-            document.header[i] = "\\language english"
-
-    j = 0
-    while True:
-        j = find_token(document.body, "\\lang turkmen", j)
-        if j == -1:
-            return
-        document.body[j] = document.body[j].replace("\\lang turkmen", "\\lang english")
-        j += 1
+    revert_language(document, "turkmen", "turkmen", "turkmen")
 
 
 def revert_fontcolor(document):
diff --git a/lib/lyx2lyx/lyx_2_1.py b/lib/lyx2lyx/lyx_2_1.py
index 63d7621ab1..8838a64042 100644
--- a/lib/lyx2lyx/lyx_2_1.py
+++ b/lib/lyx2lyx/lyx_2_1.py
@@ -34,7 +34,7 @@ from parser_tools import count_pars_in_inset, del_complete_lines, del_token, \
   #find_end_of_inset, find_end_of_layout, \
   #is_in_inset, del_token, check_token
 
-from lyx2lyx_tools import add_to_preamble, put_cmd_in_ert, get_ert
+from lyx2lyx_tools import add_to_preamble, put_cmd_in_ert, get_ert, revert_language
 
 #from lyx2lyx_tools import insert_to_preamble, \
 #  lyx2latex, latex_length, revert_flex_inset, \
@@ -1169,24 +1169,16 @@ def revert_ancientgreek(document):
 def revert_languages(document):
     "Set the document language for new supported languages to English"
 
-    languages = [
-                 "coptic", "divehi", "hindi", "kurmanji", "lao", "marathi", "occitan", "sanskrit",
-                 "syriac", "tamil", "telugu", "urdu"
-                ]
-    for n in range(len(languages)):
-        if document.language == languages[n]:
-            document.language = "english"
-            i = find_token(document.header, "\\language", 0)
-            if i != -1:
-                document.header[i] = "\\language english"
-        j = 0
-        while j < len(document.body):
-            j = find_token(document.body, "\\lang " + languages[n], j)
-            if j != -1:
-                document.body[j] = document.body[j].replace("\\lang " + languages[n], "\\lang english")
-                j += 1
-            else:
-                j = len(document.body)
+    # polyglossia-only
+    polyglossia_languages = ["coptic", "divehi", "hindi", "lao", "marathi",
+                             "occitan", "sanskrit", "syriac", "tamil",
+                             "telugu", "urdu"]
+    # babel-only
+    babel_languages = ["kurmanji"]
+    for lang in polyglossia_languages:
+        revert_language(document, lang, "", lang)
+    for lang in babel_languages:
+        revert_language(document, lang, lang, "")
 
 
 def convert_armenian(document):
@@ -4561,19 +4553,7 @@ def revert_aa2(document):
 def revert_tibetan(document):
     "Set the document language for Tibetan to English"
 
-    if document.language == "tibetan":
-        document.language = "english"
-        i = find_token(document.header, "\\language", 0)
-        if i != -1:
-            document.header[i] = "\\language english"
-    j = 0
-    while j < len(document.body):
-        j = find_token(document.body, "\\lang tibetan", j)
-        if j != -1:
-            document.body[j] = document.body[j].replace("\\lang tibetan", "\\lang english")
-            j += 1
-        else:
-            j = len(document.body)
+    revert_language(document, "tibetan", "", "tibetan")
 
 
 #############
diff --git a/lib/lyx2lyx/lyx_2_2.py b/lib/lyx2lyx/lyx_2_2.py
index ec5cfdbd0c..9011c66975 100644
--- a/lib/lyx2lyx/lyx_2_2.py
+++ b/lib/lyx2lyx/lyx_2_2.py
@@ -25,7 +25,8 @@ import sys, os
 # Uncomment only what you need to import, please.
 
 from lyx2lyx_tools import (add_to_preamble, put_cmd_in_ert, get_ert,
-    lyx2latex, lyx2verbatim, length_in_bp, convert_info_insets, insert_document_option)
+    lyx2latex, lyx2verbatim, length_in_bp, convert_info_insets, insert_document_option,
+    revert_language)
 
 from parser_tools import (check_token, del_complete_lines,
     find_end_of_inset, find_end_of_layout, find_nonempty_line, find_re,
@@ -852,15 +853,7 @@ def revert_specialchar(document):
 def revert_georgian(document):
     "Set the document language to English but assure Georgian output"
 
-    if document.language == "georgian":
-        document.language = "english"
-        i = find_token(document.header, "\\language georgian", 0)
-        if i != -1:
-            document.header[i] = "\\language english"
-        j = find_token(document.header, "\\language_package default", 0)
-        if j != -1:
-            document.header[j] = "\\language_package babel"
-        insert_document_option(document, "georgian")
+    revert_language(document, "georgian", "georgian", "")
 
 
 def revert_sigplan_doi(document):