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Improve readability of code and comments

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This commit is contained in:
Juergen Spitzmueller 2023-08-18 10:02:48 +02:00
parent fe57b19294
commit 15f9129a26
1 changed files with 18 additions and 13 deletions
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29
src/Paragraph.cpp
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@ -2052,15 +2052,16 @@ char_type Paragraph::getUChar(BufferParams const & bparams,
{
char_type c = d->text_[pos];
// Return unchanged character in LTR languages
// or if we use XeTeX
// or with babel and LuaTeX.
// Return unchanged character
// 1. in all LTR languages
// 2. if we use XeTeX (both with babel and polyglossia)
// 3. if we use LuaTeX with babel
if (!getFontSettings(bparams, pos).isRightToLeft()
|| rp.flavor == Flavor::XeTeX
|| (rp.use_babel && rp.flavor == Flavor::LuaTeX))
return c;
// Without polyglossia/bidi, we need to account for some special cases.
// For the remaining cases, we need to account for some special cases.
// FIXME This needs to be audited!
// Check if:
// * The input is as expected for all delimiters
@ -2079,15 +2080,19 @@ char_type Paragraph::getUChar(BufferParams const & bparams,
string const & lang = getFontSettings(bparams, pos).language()->lang();
char_type uc = c;
// 1. With polyglossia/luabidi all delimiters need to be mirrored,
// regardless of the languge, or script.
// 2. In the following languages, parentheses need to be mirrored.
bool const reverseparens = (lang == "hebrew" || rp.use_polyglossia);
// 3. In the following languages, brackets don't need to be mirrored.
bool const reversebrackets = (lang != "arabic_arabtex"
// These are the cases where we need to mirror delimiters in RTL context
// in the remaining cases (polyglossia + LuaTeX or classic [pdf]latex):
// 1. With polyglossia and LuaTeX (luabidi) parentheses and brackets
// need to be mirrored in RTL, regardless of the language, or script.
// 2. In the languages that follow, parentheses need to be mirrored
// in classic (pdf)latex
bool const reverseparens = (rp.use_polyglossia || lang == "hebrew");
// 3. In all RTL languages except for those that follow, brackets
// need to be mirrored in classic (pdf)latex
bool const reversebrackets = rp.use_polyglossia
|| (lang != "arabic_arabtex"
&& lang != "arabic_arabi"
&& lang != "farsi") || rp.use_polyglossia;
&& lang != "farsi");
// Now swap delimiters if needed.
switch (c) {