[LyX/master] Fix straight quote character in non-T1 encoding

[Juergen Spitzmueller]

commit 094341fa5a9597775a7adae723223e7580ab6b3a
Author: Juergen Spitzmueller <sp...@lyx.org>
Date:   Wed Aug 9 17:25:02 2017 +0200

    Fix straight quote character in non-T1 encoding
    
    Fixes: #10584
---
 src/Paragraph.cpp |   14 +++++++++++---
 1 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/src/Paragraph.cpp b/src/Paragraph.cpp
index 7c3300d..309c20c 100644
--- a/src/Paragraph.cpp
+++ b/src/Paragraph.cpp
@@ -1247,8 +1247,8 @@ void Paragraph::Private::latexSpecialChar(otexstream & os,
                }
                break;
        case '\"':
-               os << "\\char34" << termcmd;
-               column += 9;
+               os << "\\textquotedbl" << termcmd;
+               column += 14;
                break;
 
        case '$': case '&':
@@ -1499,8 +1499,16 @@ void Paragraph::Private::validate(LaTeXFeatures & 
features) const
        }
 
        // then the contents
+       BufferParams const bp = features.buffer().masterParams();
        for (pos_type i = 0; i < int(text_.size()) ; ++i) {
-               BufferEncodings::validate(text_[i], features);
+               char_type c = text_[i];
+               if (c == 0x0022) {
+                       if (features.runparams().isFullUnicode() && 
bp.useNonTeXFonts)
+                               features.require("textquotedblp");
+                       else if (bp.main_font_encoding() != "T1")
+                               features.require("textquotedbl");
+               }
+               BufferEncodings::validate(c, features);
        }
 }