* file's contents are not read into the buffer upon completion.
*/
extern int launch_editor(const char *path, struct strbuf *buffer, const char *const *env);
+extern int launch_sequence_editor(const char *path, struct strbuf *buffer,
+ const char *const *env);
extern void strbuf_add_lines(struct strbuf *sb, const char *prefix, const char *buf, size_t size);