lyx_mirror/RELEASE-NOTES
Scott Kostyshak 1dbf0e5aab Check exit code of LaTeX process in LaTeX::run
Systemcall::startscript returns the exit code of the LaTeX command
that is run, but the return value was not being checked by
LaTeX::run.  Instead, we relied on parsing log files. However, this
parsing is not perfect.

The return value is now checked and if the exit code of the command
is non-zero, an enum value is added to the return and the user is
notified of the error.

At a higher level, if the LaTeX command returns a non-zero exit code,
in the GUI a message such as
"Error while exporting format: PDF (LuaTeX)" will be given instead of
"Successful preview of format: PDF (LuaTeX)".

When run on the commandline, lyx -e lualatex example.lyx
will give "Error: LaTeX failed" and a non-zero exit code
where before it gave a zero exit code.

A real example of the bug this commit fixes is LyX's (as of this commit)
ACM-sigplan.lyx template.
Before this commit:
  $ lyx -e pdf2 ACM-sigplan.lyx
  [...snip...]
  support/Systemcall.cpp (288): Systemcall: 'pdflatex  "ACM-sigplan.tex"'
  finished with exit code 1
  $ echo $?
  0
Starting with this commit:
  $ mylyx master -e pdf2 ACM-sigplan.lyx
  support/Systemcall.cpp (288): Systemcall: 'pdflatex  "ACM-sigplan.tex"'
  finished with exit code 1
  Error: LaTeX failed
  ----------------------------------------
  LaTeX did not run successfully. The command that was run exited with
  error.
  $ echo $?
  1
2015-03-20 02:19:44 -04:00

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This file lists interface changes that might affect users in 2.2.0, some
known problems in LyX 2.2.0 and some things you have to take into account
when upgrading from earlier versions to a version of the 2.2.x series.
Interface changes
-----------------
The following pref variables were added in 2.2:
The following pref variables were changed in 2.2:
The following pref variables are obsoleted in 2.2:
- \\rtl
This variable was introduced to guard against any bad consequence of
the then-new right-to-left languages support. It is no longer needed
because of improvements. Now right-to-left support is always enabled.
The following new LyX functions have been introduced in 2.2:
The following LyX functions have been changed in 2.2:
The following LyX key bindings have been changed in 2.2:
The following LyX documents have been moved in 2.2:
The following metadata files have been added to the tarball in 2.2:
Changes with respect to external programs and libraries in 2.2:
--------------------------------------------------------
- LyX is not yet supposed to work with Qt5. It is advised to compile and
run LyX against Qt 4.8.x. On Windows, Qt 4.8.5 suffers from a bug that
breaks the use of shortcuts, so on Windows Qt 4.8.4 is advised.
- LyX now gives an error if the underlying LaTeX command exited with error.
Known issues in version 2.2.0
-----------------------------
- LyX needs to be run under Python 2 and will not work properly on systems
where Python 3 is the default binary. See bug #7030 to know how to fix
this properly, since simple sheebang conversion in *.py files will not
be enough.
Caveats when upgrading from earlier versions to 2.2.x
-------------------------------------------------------