[LyX/master] Introduce buffer-reset-export

[Juergen Spitzmueller]

commit c0f4eb058047d665bcf2d3b697f11da2ecd30b3a
Author: Juergen Spitzmueller <spitz at lyx.org>
Date:   Fri Dec 27 11:06:34 2019 +0100

    Introduce buffer-reset-export
    
    Small helper lfun that makes LyX remove the aux file before doing the
    next export. A bit more convenient than removing the files manually
    or restarting LyX.
---
 src/FuncCode.h               |    2 ++
 src/LyXAction.cpp            |    9 +++++++++
 src/frontends/qt/GuiView.cpp |   10 ++++++++++
 3 files changed, 21 insertions(+), 0 deletions(-)

diff --git a/src/FuncCode.h b/src/FuncCode.h
index f2021dd..e94a787 100644
--- a/src/FuncCode.h
+++ b/src/FuncCode.h
@@ -486,6 +486,8 @@ enum FuncCode
 	LFUN_TABULAR_STYLE_INSERT,	// spitz, 20190325
 	LFUN_PARAGRAPH_SELECT,          // Kornel, 20190416
 	LFUN_BIDI,
+	// 380
+	LFUN_BUFFER_RESET_EXPORT,       // spitz 20191226
 	LFUN_LASTACTION                 // end of the table
 };
 
diff --git a/src/LyXAction.cpp b/src/LyXAction.cpp
index 9187c78..410d0f6 100644
--- a/src/LyXAction.cpp
+++ b/src/LyXAction.cpp
@@ -778,6 +778,15 @@ void LyXAction::init()
 		{ LFUN_BUFFER_RELOAD, "buffer-reload", ReadOnly, Buffer },
 
 /*!
+ * \var lyx::FuncCode lyx::LFUN_BUFFER_RESET_EXPORT
+ * \li Action: Removes the auxiliary file before next export to assure export is done afresh.
+ * \li Syntax: buffer-reset-export
+ * \li Origin: spitz, 27 Dec 2019
+ * \endvar
+ */
+		{ LFUN_BUFFER_RESET_EXPORT, "buffer-reset-export", ReadOnly, Buffer },
+
+/*!
  * \var lyx::FuncCode lyx::LFUN_BUFFER_SAVE_AS_DEFAULT
  * \li Action: Save the current document settings as default.
  * \li Notion: The file will will be saved into ~/.lyx/templates/defaults.lyx .
diff --git a/src/frontends/qt/GuiView.cpp b/src/frontends/qt/GuiView.cpp
index bbc9beb..32d6d93 100644
--- a/src/frontends/qt/GuiView.cpp
+++ b/src/frontends/qt/GuiView.cpp
@@ -1959,6 +1959,10 @@ bool GuiView::getStatus(FuncRequest const & cmd, FuncStatus & flag)
 			&& (!doc_buffer->isClean() || doc_buffer->notifiesExternalModification());
 		break;
 
+	case LFUN_BUFFER_RESET_EXPORT:
+		enable = doc_buffer != 0;
+		break;
+
 	case LFUN_BUFFER_CHILD_OPEN:
 		enable = doc_buffer != 0;
 		break;
@@ -4135,6 +4139,12 @@ void GuiView::dispatch(FuncRequest const & cmd, DispatchResult & dr)
 			break;
 		}
 
+		case LFUN_BUFFER_RESET_EXPORT:
+			LASSERT(doc_buffer, break);
+			doc_buffer->requireFreshStart(true);
+			dr.setMessage(_("Buffer export reset."));
+			break;
+
 		case LFUN_BUFFER_WRITE:
 			LASSERT(doc_buffer, break);
 			saveBuffer(*doc_buffer);