Add InsertOnNewline argument tag

This adds a paragraph break before auto-inserting arguments in flex
insets.

Useful for specific arguments (particularly ling glosses)

lib/doc/Customization.lyx

@@ -12444,6 +12444,59 @@ layout can be automatically inserted.
 
 \end_layout
 
+\begin_layout Itemize
+
+\change_inserted -712698321 1559491402
+\begin_inset Flex Code
+status collapsed
+
+\begin_layout Plain Layout
+
+\change_inserted -712698321 1559490711
+InsertOnNewline
+\end_layout
+
+\end_inset
+
+ 
+\begin_inset Flex Code
+status collapsed
+
+\begin_layout Plain Layout
+
+\change_inserted -712698321 1559490703
+[int=0]
+\end_layout
+
+\end_inset
+
+ If this is set to 
+\begin_inset Flex Code
+status collapsed
+
+\begin_layout Plain Layout
+
+\change_inserted -712698321 1559490703
+1
+\end_layout
+
+\end_inset
+
+, this argument will be inserted on a new line with 
+\begin_inset Flex Code
+status collapsed
+
+\begin_layout Plain Layout
+
+\change_inserted -712698321 1559491402
+AutoInsert
+\end_layout
+
+\end_inset
+
+ (only available within Flex insets).
+\end_layout
+
 \begin_layout Itemize
 \begin_inset Flex Code
 status collapsed

lib/doc/de/Customization.lyx

@@ -10588,6 +10588,49 @@ e Absatzstil ausgewählt wird.
 \begin_inset Flex Code
 status collapsed
 
+\begin_layout Plain Layout
+InsertOnNewline
+\end_layout
+
+\end_inset
+
+ 
+\begin_inset Flex Code
+status collapsed
+
+\begin_layout Plain Layout
+[int=0]
+\end_layout
+
+\end_inset
+
+ Wenn dies auf 
+\begin_inset Flex Code
+status collapsed
+
+\begin_layout Plain Layout
+1
+\end_layout
+
+\end_inset
+
+ gesetzt ist, wird dieses Argument mit 
+\begin_inset Flex Code
+status collapsed
+
+\begin_layout Plain Layout
+AutoInsert
+\end_layout
+
+\end_inset
+
+ auf eine neue Zeile gesetzt (nur mit Flex-Einfügungen verfügbar).
+\end_layout
+
+\begin_layout Itemize
+\begin_inset Flex Code
+status collapsed
+
 \begin_layout Plain Layout
 InsertCotext
 \end_layout

lib/scripts/layout2layout.py

@@ -249,7 +249,7 @@ currentFormat = 75
 # New InsetLayout and Argument tag NewlineCmd
 
 # Incremented to format 75, 2 June 2019 by spitz
-# New Argument tag FreeSpacing
+# New Argument tags FreeSpacing, InsertOnNewline
 
 # Do not forget to document format change in Customization
 # Manual (section "Declaring a new text class").

src/Layout.cpp

@@ -1016,6 +1016,7 @@ void Layout::readArgument(Lexer & lex)
 	arg.nodelims = false;
 	arg.autoinsert = false;
 	arg.insertcotext = false;
+	arg.insertonnewline = false;
 	bool error = false;
 	bool finished = false;
 	arg.font = inherit_font;

src/Layout.h

@@ -106,6 +106,7 @@ public:
 		FontInfo labelfont;
 		bool autoinsert;
 		bool insertcotext;
+		bool insertonnewline;
 		ArgPassThru passthru;
 		docstring pass_thru_chars;
 		bool is_toc_caption;

src/Text3.cpp

@@ -2078,6 +2078,10 @@ void Text::dispatch(Cursor & cur, FuncRequest & cmd)
 		Layout::LaTeXArgMap::const_iterator const laend = args.end();
 		for (; lait != laend; ++lait) {
 			Layout::latexarg arg = (*lait).second;
+			if (!inautoarg && arg.insertonnewline && cur.pos() > 0) {
+				FuncRequest cmd2(LFUN_PARAGRAPH_BREAK);
+				lyx::dispatch(cmd2);
+			}
 			if (arg.autoinsert) {
 				// The cursor might have been invalidated by the replaceSelection.
 				cur.buffer()->changed(true);
@@ -2087,6 +2091,10 @@ void Text::dispatch(Cursor & cur, FuncRequest & cmd)
 					cur.leaveInset(cur.inset());
 					cur.posForward();
 					inautoarg = false;
+					if (arg.insertonnewline && cur.pos() > 0) {
+						FuncRequest cmd2(LFUN_PARAGRAPH_BREAK);
+						lyx::dispatch(cmd2);
+					}
 				}
 				FuncRequest cmd2(LFUN_ARGUMENT_INSERT, (*lait).first);
 				lyx::dispatch(cmd2);

src/insets/InsetLayout.cpp

@@ -605,6 +605,7 @@ void InsetLayout::readArgument(Lexer & lex)
 	arg.mandatory = false;
 	arg.autoinsert = false;
 	arg.insertcotext = false;
+	arg.insertonnewline = false;
 	bool error = false;
 	bool finished = false;
 	arg.font = inherit_font;
@@ -639,6 +640,9 @@ void InsetLayout::readArgument(Lexer & lex)
 		} else if (tok == "insertcotext") {
 			lex.next();
 			arg.insertcotext = lex.getBool();
+		} else if (tok == "insertonnewline") {
+			lex.next();
+			arg.insertonnewline = lex.getBool();
 		} else if (tok == "leftdelim") {
 			lex.next();
 			arg.ldelim = lex.getDocString();