Add a wrong_output ctest for mixing inTitle #10347

As of 0b1cf133 we now warn in the GUI of this issue, but there is a
discussion about whether we should change our LaTeX output and allow
for the workflow of mixing inTitle layouts. For more information,
see #10347.

autotests/export/mixing_inTitle_layouts.lyx

@@ -0,0 +1,102 @@
+#LyX 2.2 created this file. For more info see http://www.lyx.org/
+\lyxformat 508
+\begin_document
+\begin_header
+\save_transient_properties true
+\origin unavailable
+\textclass article
+\use_default_options true
+\maintain_unincluded_children false
+\language english
+\language_package default
+\inputencoding auto
+\fontencoding global
+\font_roman "default" "default"
+\font_sans "default" "default"
+\font_typewriter "default" "default"
+\font_math "auto" "auto"
+\font_default_family default
+\use_non_tex_fonts false
+\font_sc false
+\font_osf false
+\font_sf_scale 100 100
+\font_tt_scale 100 100
+\graphics default
+\default_output_format default
+\output_sync 1
+\bibtex_command default
+\index_command default
+\paperfontsize default
+\spacing single
+\use_hyperref false
+\papersize default
+\use_geometry false
+\use_package amsmath 1
+\use_package amssymb 1
+\use_package cancel 1
+\use_package esint 1
+\use_package mathdots 1
+\use_package mathtools 1
+\use_package mhchem 1
+\use_package stackrel 1
+\use_package stmaryrd 1
+\use_package undertilde 1
+\cite_engine basic
+\cite_engine_type default
+\biblio_style plain
+\use_bibtopic false
+\use_indices false
+\paperorientation portrait
+\suppress_date false
+\justification true
+\use_refstyle 1
+\index Index
+\shortcut idx
+\color #008000
+\end_index
+\secnumdepth 3
+\tocdepth 3
+\paragraph_separation indent
+\paragraph_indentation default
+\quotes_language english
+\papercolumns 1
+\papersides 1
+\paperpagestyle default
+\tracking_changes false
+\output_changes false
+\html_math_output 0
+\html_css_as_file 0
+\html_be_strict false
+\end_header
+
+\begin_body
+
+\begin_layout Title
+this is a title
+\end_layout
+
+\begin_layout Standard
+\begin_inset Note Note
+status open
+
+\begin_layout Plain Layout
+This is standard text.
+ Should the date (below) be output before or after this layout? Note that
+ the date below is not taken into account when writing the date in the output
+ because the title is already made.
+ It is common to put something like a LyX note in a standard layout in-between
+ inTitle layouts.
+ If you delete this note (and the empty standard layout), the output changes.
+\end_layout
+
+\end_inset
+
+
+\end_layout
+
+\begin_layout Date
+2000
+\end_layout
+
+\end_body
+\end_document

development/autotests/unreliableTests

@@ -96,3 +96,7 @@ export/doc/(|de/|es/|fr/)EmbeddedObjects_pdf4_texF
 # inputencoding="utf8-plain" with 8-bit TeX: non-ASCII characters are passed
 #  as two 8-bit characters leading to garbage in the output
 export/export/utf8-plain-with-tex-fonts_(dvi|pdf.?)
+
+# The following document mixes inTitle layouts and leads to
+# likely unintended output. See #10347
+export/mixing_inTitle_layouts.lyx