diff --git a/src/proto/evalvars.pro b/src/proto/evalvars.pro
index ab4320d..97bec7d 100644
--- a/src/proto/evalvars.pro
+++ b/src/proto/evalvars.pro
@@ -105,4 +105,6 @@
 void copy_callback(callback_T *dest, callback_T *src);
 void expand_autload_callback(callback_T *cb);
 void free_callback(callback_T *callback);
+char_u *eval_all_expr_in_str(char_u *str);
+
 /* vim: set ft=c : */
diff --git a/src/proto/typval.pro b/src/proto/typval.pro
index 459cf7c..5b1f974 100644
--- a/src/proto/typval.pro
+++ b/src/proto/typval.pro
@@ -72,6 +72,7 @@
 int eval_lit_string(char_u **arg, typval_T *rettv, int evaluate);
 char_u *tv2string(typval_T *tv, char_u **tofree, char_u *numbuf, int copyID);
 int eval_env_var(char_u **arg, typval_T *rettv, int evaluate);
+int eval_interp_string(char_u **arg, typval_T *rettv, int evaluate);
 linenr_T tv_get_lnum(typval_T *argvars);
 linenr_T tv_get_lnum_buf(typval_T *argvars, buf_T *buf);
 buf_T *tv_get_buf(typval_T *tv, int curtab_only);
diff --git a/src/proto/vim9compile.pro b/src/proto/vim9compile.pro
index 1fe46f0..03f7df1 100644
--- a/src/proto/vim9compile.pro
+++ b/src/proto/vim9compile.pro
@@ -16,7 +16,7 @@
 int may_get_next_line_error(char_u *whitep, char_u **arg, cctx_T *cctx);
 void fill_exarg_from_cctx(exarg_T *eap, cctx_T *cctx);
 int func_needs_compiling(ufunc_T *ufunc, compiletype_T compile_type);
-int compile_heredoc_string(char_u *str, int evalstr, cctx_T *cctx);
+int compile_all_expr_in_str(char_u *str, int evalstr, cctx_T *cctx);
 int assignment_len(char_u *p, int *heredoc);
 void vim9_declare_error(char_u *name);
 int get_var_dest(char_u *name, assign_dest_T *dest, cmdidx_T cmdidx, int *option_scope, int *vimvaridx, type_T **type, cctx_T *cctx);