racer-complete fails with "wrong-type-argument stringp nil"

[jo-so]

The backtrace:

Debugger entered--Lisp error: (wrong-type-argument stringp nil)
  string-to-number(nil)
  (put-text-property 0 1 (quote line) (string-to-number line) name)
  (let* ((--dash-source-6-- (s-split-up-to "," (s-chop-prefix "MATCH " it) 5)) (name (car-safe (prog1 --dash-source-6-- (setq --dash-source-6-- (cdr --dash-source-6--))))) (line (car-safe (prog1 --dash-source-6-- (setq --dash-source-6-- (cdr --dash-source-6--))))) (col (car-safe (prog1 --dash-source-6-- (setq --dash-source-6-- (cdr --dash-source-6--))))) (file (car-safe (prog1 --dash-source-6-- (setq --dash-source-6-- (cdr --dash-source-6--))))) (matchtype (car-safe (prog1 --dash-source-6-- (setq --dash-source-6-- (cdr --dash-source-6--))))) (ctx (car --dash-source-6--))) (put-text-property 0 1 (quote line) (string-to-number line) name) (put-text-property 0 1 (quote col) (string-to-number col) name) (put-text-property 0 1 (quote file) file name) (put-text-property 0 1 (quote matchtype) matchtype name) (put-text-property 0 1 (quote ctx) ctx name) name)
  (closure ((_ignore . "place_holder_re") t) (it) (let* ((--dash-source-6-- (s-split-up-to "," (s-chop-prefix "MATCH " it) 5)) (name (car-safe (prog1 --dash-source-6-- (setq --dash-source-6-- (cdr --dash-source-6--))))) (line (car-safe (prog1 --dash-source-6-- (setq --dash-source-6-- (cdr --dash-source-6--))))) (col (car-safe (prog1 --dash-source-6-- (setq --dash-source-6-- (cdr --dash-source-6--))))) (file (car-safe (prog1 --dash-source-6-- (setq --dash-source-6-- (cdr --dash-source-6--))))) (matchtype (car-safe (prog1 --dash-source-6-- (setq --dash-source-6-- (cdr --dash-source-6--))))) (ctx (car --dash-source-6--))) (put-text-property 0 1 (quote line) (string-to-number line) name) (put-text-property 0 1 (quote col) (string-to-number col) name) (put-text-property 0 1 (quote file) file name) (put-text-property 0 1 (quote matchtype) matchtype name) (put-text-property 0 1 (quote ctx) ctx name) name))("MATCH place_holder_re")
  mapcar((closure ((_ignore . "place_holder_re") t) (it) (let* ((--dash-source-6-- (s-split-up-to "," (s-chop-prefix "MATCH " it) 5)) (name (car-safe (prog1 --dash-source-6-- (setq --dash-source-6-- (cdr --dash-source-6--))))) (line (car-safe (prog1 --dash-source-6-- (setq --dash-source-6-- (cdr --dash-source-6--))))) (col (car-safe (prog1 --dash-source-6-- (setq --dash-source-6-- (cdr --dash-source-6--))))) (file (car-safe (prog1 --dash-source-6-- (setq --dash-source-6-- (cdr --dash-source-6--))))) (matchtype (car-safe (prog1 --dash-source-6-- (setq --dash-source-6-- (cdr --dash-source-6--))))) (ctx (car --dash-source-6--))) (put-text-property 0 1 (quote line) (string-to-number line) name) (put-text-property 0 1 (quote col) (string-to-number col) name) (put-text-property 0 1 (quote file) file name) (put-text-property 0 1 (quote matchtype) matchtype name) (put-text-property 0 1 (quote ctx) ctx name) name)) ("MATCH place_holder_re"))
  racer-complete("place_holder_re")

The return of (racer--call-at-point "complete") contains the element »"MATCH placeholder"«.

% racer --version
racer 2.0.8
% rustc --version
rustc 1.20.0-nightly (696412de7 2017-07-06)
% cargo --version
cargo 0.21.0-nightly (eb6cf012a 2017-07-02)

My fix:

--- /tmp/racel.el.orig  2017-07-09 17:54:53.197355812 +0200
+++ /home/joerg/.emacs.d/elpa/racer-20170218.516/racer.el       2017-07-09 17:53:16.923083791 +0200
@@ -612,7 +612,7 @@
 (defun racer-complete (&optional _ignore)
   "Completion candidates at point."
   (->> (racer--call-at-point "complete")
-       (--filter (s-starts-with? "MATCH" it))
+       (--filter (s-match "^MATCH .*," it))
        (--map (-let [(name line col file matchtype ctx)
                      (s-split-up-to "," (s-chop-prefix "MATCH " it) 5)]
                 (put-text-property 0 1 'line (string-to-number line) name)