patch 8.0.1505: debugger can't break on a condition commit https://github.com/vim/vim/commit/c6f9f739d32084923c3031cbf6f581f8c8bf7fd2 Author: Bram Moolenaar <Bram@vim.org> Date: Sun Feb 11 19:06:26 2018 +0100 patch 8.0.1505: debugger can't break on a condition Problem: Debugger can't break on a condition. (Charles Campbell) Solution: Add ":breakadd expr". (Christian Brabandt, closes https://github.com/vim/vim/issues/859)

--- a/src/proto/ex_cmds2.pro
+++ b/src/proto/ex_cmds2.pro
@@ -1,4 +1,5 @@
 /* ex_cmds2.c */
+int has_watchexpr (void);
 void do_debug(char_u *cmd);
 void ex_debug(exarg_T *eap);
 void dbg_check_breakpoint(exarg_T *eap);