patch 9.0.1262: the did_set_string_option function is too long
Problem: The did_set_string_option function is too long.
Solution: Split off functionality to individual functions. (Yegappan
Lakshmanan, Lewis Russell, closes #11904)
diff --git a/src/proto/quickfix.pro b/src/proto/quickfix.pro
index 913c3c4..3a210b0 100644
--- a/src/proto/quickfix.pro
+++ b/src/proto/quickfix.pro
@@ -15,7 +15,7 @@
void ex_copen(exarg_T *eap);
void ex_cbottom(exarg_T *eap);
linenr_T qf_current_entry(win_T *wp);
-int qf_process_qftf_option(void);
+char *qf_process_qftf_option(void);
int grep_internal(cmdidx_T cmdidx);
void ex_make(exarg_T *eap);
int qf_get_size(exarg_T *eap);