patch 8.1.1230: a lot of code is shared between vim.exe and gvim.exe
Problem: A lot of code is shared between vim.exe and gvim.exe.
Solution: Optionally put the shared code in vim.dll. (Ken Takata,
closes #4287)
diff --git a/src/misc2.c b/src/misc2.c
index 79fe702..fe14380 100644
--- a/src/misc2.c
+++ b/src/misc2.c
@@ -4650,3 +4650,80 @@
}
# endif
#endif
+
+#if defined(FEAT_SESSION) || defined(PROTO)
+/*
+ * Generate a script that can be used to restore the current editing session.
+ * Save the value of v:this_session before running :mksession in order to make
+ * automagic session save fully transparent. Return TRUE on success.
+ */
+ int
+write_session_file(char_u *filename)
+{
+ char_u *escaped_filename;
+ char *mksession_cmdline;
+ unsigned int save_ssop_flags;
+ int failed;
+
+ /*
+ * Build an ex command line to create a script that restores the current
+ * session if executed. Escape the filename to avoid nasty surprises.
+ */
+ escaped_filename = vim_strsave_escaped(filename, escape_chars);
+ if (escaped_filename == NULL)
+ return FALSE;
+ mksession_cmdline = (char *)alloc(10 + (int)STRLEN(escaped_filename) + 1);
+ if (mksession_cmdline == NULL)
+ {
+ vim_free(escaped_filename);
+ return FALSE;
+ }
+ strcpy(mksession_cmdline, "mksession ");
+ STRCAT(mksession_cmdline, escaped_filename);
+ vim_free(escaped_filename);
+
+ /*
+ * Use a reasonable hardcoded set of 'sessionoptions' flags to avoid
+ * unpredictable effects when the session is saved automatically. Also,
+ * we definitely need SSOP_GLOBALS to be able to restore v:this_session.
+ * Don't use SSOP_BUFFERS to prevent the buffer list from becoming
+ * enormously large if the GNOME session feature is used regularly.
+ */
+ save_ssop_flags = ssop_flags;
+ ssop_flags = (SSOP_BLANK|SSOP_CURDIR|SSOP_FOLDS|SSOP_GLOBALS
+ |SSOP_HELP|SSOP_OPTIONS|SSOP_WINSIZE|SSOP_TABPAGES);
+
+ do_cmdline_cmd((char_u *)"let Save_VV_this_session = v:this_session");
+ failed = (do_cmdline_cmd((char_u *)mksession_cmdline) == FAIL);
+ do_cmdline_cmd((char_u *)"let v:this_session = Save_VV_this_session");
+ do_unlet((char_u *)"Save_VV_this_session", TRUE);
+
+ ssop_flags = save_ssop_flags;
+ vim_free(mksession_cmdline);
+
+ /*
+ * Reopen the file and append a command to restore v:this_session,
+ * as if this save never happened. This is to avoid conflicts with
+ * the user's own sessions. FIXME: It's probably less hackish to add
+ * a "stealth" flag to 'sessionoptions' -- gotta ask Bram.
+ */
+ if (!failed)
+ {
+ FILE *fd;
+
+ fd = open_exfile(filename, TRUE, APPENDBIN);
+
+ failed = (fd == NULL
+ || put_line(fd, "let v:this_session = Save_VV_this_session") == FAIL
+ || put_line(fd, "unlet Save_VV_this_session") == FAIL);
+
+ if (fd != NULL && fclose(fd) != 0)
+ failed = TRUE;
+
+ if (failed)
+ mch_remove(filename);
+ }
+
+ return !failed;
+}
+#endif