anne/lyx_mirror
1
0
Fork 0
mirror of https://git.lyx.org/repos/lyx.git synced 2024-11-22 10:00:33 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Handle script chars in latexSurrogatePair

Browse Source 
If we have "script chars" (\textcyr or \textgreek) combined with
combining chars, the combining chars need to go inside the script
macro.

Fixes: #6463
This commit is contained in:
Juergen Spitzmueller 2018-04-21 11:38:19 +02:00
parent 9fa36455c9
commit b7223bc5d1
1 changed files with 37 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

53
src/Paragraph.cpp
View File

@ -887,9 +887,22 @@ int Paragraph::Private::latexSurrogatePair(otexstream & os, char_type c,
}
docstring latex2 = encoding.latexChar(c).first;
if (docstring(1, next) == latex1) {
// The encoding supports the combination:
// output as is (combining char after base char).
os << latex2 << latex1;
return latex1.length() + latex2.length();
}
// Handle combining characters in "script" context (i.e., \textgreek and \textcyr)
docstring::size_type const brace1 = latex2.find_first_of(from_ascii("{"));
docstring::size_type const brace2 = latex2.find_last_of(from_ascii("}"));
string script = to_ascii(latex2.substr(1, brace1 - 1));
// "Script chars" need to embraced in \textcyr and \textgreek notwithstanding
// whether they are encodable or not (it only depends on the font encoding)
if (!runparams.isFullUnicode())
// This will get us a script value to deal with below
Encodings::isKnownScriptChar(c, script);
int pos = 0;
int length = brace2;
string fontenc;
@ -897,27 +910,35 @@ int Paragraph::Private::latexSurrogatePair(otexstream & os, char_type c,
fontenc = runparams.local_font->language()->fontenc();
else
fontenc = runparams.main_fontenc;
if ((script == "textgreek" && fontenc == "LGR")
||(script == "textcyr" && (fontenc == "T2A" || fontenc == "T2B"
|| fontenc == "T2C" || fontenc == "X2"))) {
// Correct font encoding is being used, so we can avoid \text[greek|cyr].
docstring scriptmacro;
docstring cb;
if (script == "textgreek" || script == "textcyr") {
// We separate the script macro (\text[greek|cyr]) from the rest,
// since we need to include the combining char in it (#6463).
// This is "the rest":
pos = brace1 + 1;
length -= pos;
latex2 = latex2.substr(pos, length);
// We only need the script macro with non-native font encodings
if ((script == "textgreek" && fontenc != "LGR")
|| (script == "textcyr" && fontenc != "T2A" && fontenc != "T2B"
&& fontenc != "T2C" && fontenc != "X2")) {
scriptmacro = from_ascii("\\" + script + "{");
cb = from_ascii("}");
}
}
if (docstring(1, next) == latex1) {
// the encoding supports the combination
os << latex2 << latex1;
return latex1.length() + latex2.length();
} else if (runparams.local_font &&
runparams.local_font->language()->lang() == "polutonikogreek") {
// polutonikogreek only works without the brackets
os << latex1 << latex2;
return latex1.length() + latex2.length();
} else
os << latex1 << '{' << latex2 << '}';
return latex1.length() + latex2.length() + 2;
docstring lb;
docstring rb;
// polutonikogreek does not play nice with brackets
if (!runparams.local_font
|| runparams.local_font->language()->lang() != "polutonikogreek") {
lb = from_ascii("{");
rb = from_ascii("}");
}
os << scriptmacro << latex1 << lb << latex2 << rb << cb;
return latex1.length() + latex2.length() + lb.length() + rb.length() + cb.length();
}