[LyX/master] Fix some quote inset bugs:

[Juergen Spitzmueller]

commit ad8352039016968edb4a93c082eef5389b1823c0
Author: Juergen Spitzmueller <sp...@lyx.org>
Date:   Wed Dec 7 15:37:03 2016 +0100

    Fix some quote inset bugs:
    
    * Adjoining closing Single + double quote becomes double + single quote
      (for English, Swedish and German, LaTeX export as ''').
    
    * French double quotes are converted to << >> in the LaTeX file and to
      double inverted question/interrogation marks in the output, if the font
      encoding is set to [None] or OT1 but the global default is T1. (test
      for lyxrc.fontenc instead of the document-specific fontenc setting in
      InsetQuotes.cpp).
    
    * Quote type ignored for LyXHTML: always "English" quotes used.
    
    See #10451
---
 src/insets/InsetQuotes.cpp |   36 ++++++++++++++++++++----------------
 src/insets/InsetQuotes.h   |    2 ++
 2 files changed, 22 insertions(+), 16 deletions(-)

diff --git a/src/insets/InsetQuotes.cpp b/src/insets/InsetQuotes.cpp
index 1a6c925..84dbe1a 100644
--- a/src/insets/InsetQuotes.cpp
+++ b/src/insets/InsetQuotes.cpp
@@ -88,6 +88,12 @@ char const * const latex_quote_babel[2][5] = {
   { "\\glqq ", "''", "``", "\\flqq{}", "\\frqq{}" }
 };
 
+char const * const latex_quote_html[2][5] = {
+       { "&sbquo;",  "&rsquo;", "&lsquo;",
+         "&lsaquo;", "&rsaquo;" },
+  { "&bdquo;", "&rdquo;", "&ldquo;", "&laquo;", "&raquo;" }
+};
+
 } // namespace anon
 
 
@@ -99,10 +105,14 @@ InsetQuotes::InsetQuotes(Buffer * buf, string const & str) 
: Inset(buf)
 InsetQuotes::InsetQuotes(Buffer * buf, char_type c, QuoteTimes t)
        : Inset(buf), times_(t)
 {
-       if (buf)
+       if (buf) {
                language_ = buf->params().quotes_language;
-       else
+               fontenc_ = (buf->params().fontenc == "global")
+                       ? lyxrc.fontenc : buf->params().fontenc;
+       } else {
                language_ = EnglishQuotes;
+               fontenc_ = lyxrc.fontenc;
+       }
 
        setSide(c);
 }
@@ -250,7 +260,7 @@ void InsetQuotes::latex(otexstream & os, OutputParams const 
& runparams) const
                        qstr = "\\og "; //the spaces are important here
                else
                        qstr = " \\fg{}"; //and here
-       } else if (lyxrc.fontenc == "T1" && !runparams.use_polyglossia) {
+       } else if (fontenc_ == "T1" && !runparams.use_polyglossia) {
                qstr = latex_quote_t1[times_][quoteind];
 #ifdef DO_USE_DEFAULT_LANGUAGE
        } else if (doclang == "default") {
@@ -263,12 +273,14 @@ void InsetQuotes::latex(otexstream & os, OutputParams 
const & runparams) const
                qstr = latex_quote_babel[times_][quoteind];
        }
 
-       // Always guard against unfortunate ligatures (!` ?`)
+       // Always guard against unfortunate ligatures (!` ?` `` '' ,, << >>)
+       char_type const lastchar = os.lastChar();
        if (prefixIs(qstr, "`")) {
-               char_type const lastchar = os.lastChar();
                if (lastchar == '!' || lastchar == '?')
                        qstr.insert(0, "{}");
        }
+       if (qstr[1] == lastchar)
+               qstr.insert(0, "{}");
 
        os << from_ascii(qstr);
 }
@@ -284,16 +296,8 @@ int InsetQuotes::plaintext(odocstringstream & os,
 
 
 docstring InsetQuotes::getQuoteEntity() const {
-       if (times_ == DoubleQuotes) {
-               if (side_ == LeftQuote)
-                       return from_ascii("&ldquo;");
-               else
-                       return from_ascii("&rdquo;");
-       }
-       if (side_ == LeftQuote)
-               return from_ascii("&lsquo;");
-       else
-               return from_ascii("&rsquo;");
+       const int quoteind = quote_index[side_][language_];
+       return from_ascii(latex_quote_html[times_][quoteind]);
 }
 
 
@@ -332,7 +336,7 @@ void InsetQuotes::validate(LaTeXFeatures & features) const
 #else
        if (!features.useBabel()
 #endif
-           && lyxrc.fontenc != "T1") {
+           && fontenc_ != "T1") {
                if (times_ == SingleQuotes)
                        switch (type) {
                        case ',': features.require("quotesinglbase"); break;
diff --git a/src/insets/InsetQuotes.h b/src/insets/InsetQuotes.h
index fec7fbc..49bd842 100644
--- a/src/insets/InsetQuotes.h
+++ b/src/insets/InsetQuotes.h
@@ -116,6 +116,8 @@ private:
        QuoteSide side_;
        ///
        QuoteTimes times_;
+       ///
+       std::string fontenc_;
 };
 
 } // namespace lyx