patch 8.2.1914: Vim9: cannot put line break in expression for '=' register
Problem: Vim9: cannot put line break in expression for '=' register.
Solution: Pass fgetline to set_expr_line(). (closes #7209)
diff --git a/src/proto/register.pro b/src/proto/register.pro
index b3a96be..a3a6e50 100644
--- a/src/proto/register.pro
+++ b/src/proto/register.pro
@@ -6,7 +6,7 @@
void set_y_current(yankreg_T *yreg);
void set_y_previous(yankreg_T *yreg);
int get_expr_register(void);
-void set_expr_line(char_u *new_line);
+void set_expr_line(char_u *new_line, exarg_T *eap);
char_u *get_expr_line(void);
int valid_yank_reg(int regname, int writing);
int get_yank_register(int regname, int writing);