Avoid dangling-reference warning in several places
This new warning in gcc 13 is annoying because it happens in certain
parts of our code where it is harmless to pass a temporary variable to
a function that returns a reference.
This patch introduces a new pair of macros,
LYX_BEGIN_MUTE_GCC_WARNING(warn) and LYX_END_MUTE_GCC_WARNING, which
can be used to define a block of code where a given GCC warning is disabled.
The macros are no-ops with compilers other than gcc, although some
compilers that pretend to be GCC make be mis-detected. The worse that
can happen AFAIU is a bunch of warnings.
The macro relies on an intimidating set of for nested macros. The goal
of these macros is to build a nested string bit by bit. Here is how it
works:
The next question is: what is _Pragma() good for? Well, it is a
version of #pragma that can be used in a macro.
And finally, what are those pragmas good for? The 'push' and 'pop'
ones make changes to warnings local. The 'ignored' ones allow
to disable some warnings. And disabling -Wpragmas ensures that we do
not have a warning if we try to disable a warning that is not
supported by the compiler.
The \underbar macro is a text mode macro that can also be used
in math mode. However, when inserting it in mathed, LyX helpfully
wraps it in a \text inset. One can dissolve such text inset and
the macro would appear in math mode without any problem. But the
output routine thinks that the user is shooting itself in the
foot and tries to protect him by wrapping \underbar in the
\lyxmathsym macro, whose definition is normally added to the
preamble when an unicode character is used in math mode.
Of course, this is not the case for \underbar and a compile
error arises. The easier solution is to simply add lyxmathsym as
a requirement for \underbar in lib/symbols, but this means
that the definition of \lyxmathsym would be added even when not
necessary (because in the validation routine we miss the info
about the current mode). The correct solution is acknowledging
the dual nature of \underbar as a text-mode macro that can also
be used in math mode. Luckily the correct solution is almost as
easy as the easier one and is what is done in this commit.
Pavel Sanda [Wed, 8 Nov 2023 20:42:54 +0000 (21:42 +0100)]
Fix mangling names in temp directory (amends eef0c8e8).
Separate mangled-name tables for xhtml and latex exports.
LaTeX route should stay as it were (counter+mangled path within filenames in
temp directory)
xHTML route uses hash of path + filename only. We won't use counters because
(unlike in LaTeX export) they stay visible in final export directory and
generally change across LyX sessions.
Hash is short with collision handling because path-length limits of Windows.
If an element is underlined in mathed by using the text properties
dialog, the changes accumulate. So, for example, to change a single
underline to a double one, one would need removing the previous
underline first. This commit allows using the text properties
dialog and simply replace an underline type with another one.
However, this works only if the underlined element is not included
in some other inset. For example, given "\uline{\text{abc}}",
selecting the 'b' and choosing a double underline produces
"\uline{\text{a\uuline{b}c}}". But, given "\text{\uline{abc}}", and
operating as before produces "\text{\uline{a}\uuline{b}\uline{c}}".
Until now only the color of the text could be changed by using
the text properties dialog. This commit allows changing all
other properties except for strikethrough. It is possible to
also add underlining with the limitation that the changes
accumulate. This requires other work but I think that underlining
and strikethrough are not so important in mathed and can be
refined at a later time.
Some text-in-math environments such as \text, \mbox, \fbox, and
\makebox, inherit the outer text font. This commit reflects this
in the on-screen representation.
The text-in-math environments such as \text, \mbox, \fbox, \makebox
and so on, inherit the outer text font. This commit reflects this
in the on-screen representation.
Do not use Color_selectionmath when selection is gone
It might happen that the selection goes away without recomputing
metrics (for example with char-forward). The added test is a bit of a
band-aid for this situation. A better solution would be to understand
better when metrics computation is triggered in mathed.
Scott Kostyshak [Tue, 10 Oct 2023 14:07:23 +0000 (10:07 -0400)]
Fix three sign-compare compiler warning
Fixes three similar warnings. One of them is the following:
src/insets/InsetInfo.cpp:1583:20: error: comparison of integers of different signs: 'int' and 'std::basic_string<wchar_t>::size_type' (aka 'unsigned long') [-Werror,-Wsign-compare]
for (int i = 0; i < sequence.length(); ++i) {
~ ^ ~~~~~~~~~~~~~~~~~
DocBook: fix a crash in docbookSimpleAllParagraphs.
When having the code preview pane open with examples/Language_Support/Mixing_Japanese_with_other_Languages_(with_CJKutf8), clicking at random on paragraphs sometimes yielded a crash: *par when par is the end of the iterator. LyX could output the whole document as DocBook without this patch and still generates the same output with it (i.e. no text is missing).
DocBook: fix closing formatting after deleted text.
Previously, when closing font tags, only the previous character's font was used. However, if that character is deleted, it had no change of having the right font tags opened/closed. Hence, look further to compare the font of the current character to output with the font of the previously output character.
A similar patch would be required for LyXHTML, but it will come later. The main impact is that some text isn't output in XHTML (like DocBook before this patch).
The code isn't as clean as it could be. I avoided touching anything not related to DocBook, as the release of 2.4 is nearing, while leaving comments for parts to improve for the next release cycle. Given that the code compiles, there are no risks for TeX or XHTML outputs; for DocBook, less content is skipped, which is a net improvement for users.
projects / lyx.git / log