From 0838ee3b3b77f0a6945b57bca87315acf650479f Mon Sep 17 00:00:00 2001
From: jixiuf <jixiuf@qq.com>
Date: Tue, 30 Aug 2022 11:17:40 +0800
Subject: check  libvterm version,make it compile with libvterm<0.2

---
 CMakeLists.txt | 6 ++++++
 vterm-module.c | 7 +++++--
 vterm-module.h | 4 ++--
 vterm.el       | 2 +-
 4 files changed, 14 insertions(+), 5 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index e0c0851..d909076 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -42,6 +42,12 @@ if (USE_SYSTEM_LIBVTERM)
 #    add_compile_definitions(VTermStringFragmentNotExists)
     add_definitions(-DVTermStringFragmentNotExists)
     endif()
+    execute_process(COMMAND  grep -c "VTermSelectionMask" "${LIBVTERM_INCLUDE_DIR}/vterm.h" OUTPUT_VARIABLE VTermSelectionMaskExists)
+    if (${VTermSelectionMaskExists} EQUAL "0")
+#    add_compile_definitions(VTermStringFragmentNotExists)
+    add_definitions(-DVTermSelectionMaskNotExists)
+    endif()
+
   else()
     message(STATUS "System libvterm not found: libvterm will be downloaded and compiled as part of the build process")
   endif()
diff --git a/vterm-module.c b/vterm-module.c
index 8fcf8ed..a41188a 100644
--- a/vterm-module.c
+++ b/vterm-module.c
@@ -1153,7 +1153,7 @@ static VTermStateFallbacks parser_callbacks = {
     .osc = &osc_callback,
     .dcs = NULL,
 };
-
+#ifndef VTermSelectionMaskNotExists
 static int set_selection(VTermSelectionMask mask, VTermStringFragment frag,
                          void *user) {
   Term *term = (Term *)user;
@@ -1183,6 +1183,7 @@ static VTermSelectionCallbacks selection_callbacks = {
     .set = &set_selection,
     .query = NULL,
 };
+#endif /* VTermSelectionMaskNotExists */
 
 #endif
 
@@ -1206,9 +1207,11 @@ emacs_value Fvterm_new(emacs_env *env, ptrdiff_t nargs, emacs_value args[],
 
   VTermState *state = vterm_obtain_state(term->vt);
   vterm_state_set_unrecognised_fallbacks(state, &parser_callbacks, term);
+
+#ifndef VTermSelectionMaskNotExists
   vterm_state_set_selection_callbacks(state, &selection_callbacks, term,
                                       term->selection_buf, SELECTION_BUF_LEN);
-
+#endif
   vterm_state_set_bold_highbright(state, set_bold_hightbright);
 
   vterm_screen_reset(term->vts, 1);
diff --git a/vterm-module.h b/vterm-module.h
index dca092b..e8bb01b 100644
--- a/vterm-module.h
+++ b/vterm-module.h
@@ -100,9 +100,9 @@ typedef struct Term {
 
   /*  c , p , q , s , 0 , 1 , 2 , 3 , 4 , 5 , 6 , and 7  */
   /* clipboard, primary, secondary, select, or cut buffers 0 through 7 */
-  VTermSelectionMask selection_mask;
+  int selection_mask; /* see VTermSelectionMask in vterm.h */
   char *selection_data;
-  char selection_buf[SELECTION_BUF_LEN]; /* buf for */
+  char selection_buf[SELECTION_BUF_LEN];
 
   /* the size of dirs almost = window height, value = directory of that line */
   LineInfo **lines;
diff --git a/vterm.el b/vterm.el
index dd4c5a4..38d85b7 100644
--- a/vterm.el
+++ b/vterm.el
@@ -305,7 +305,7 @@ demo: \\='(\"env1=v1\" \"env2=v2\")"
 
 
 (defcustom vterm-enable-manipulate-selection-data-by-osc52 nil
-  "Support OSC 52 MANIPULATE SELECTION DATA.
+  "Support OSC 52 MANIPULATE SELECTION DATA(libvterm 0.2 is needed).
 
 Support copy text to Emacs kill ring and system clipboard by using OSC 52.
 For example: send base64 encoded \\='foo\\=' to kill ring: echo -en \\='\\e]52;c;Zm9v\\a\\=',
-- 
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