[O] tag search broken

[Marcelo de Moraes Serpa]

Hello guys,

My tag search is broken, for some reason. When I search for "tag1" for example, the search breaks and I get the following message in the *Messages* buffer:

if: Wrong type argument: stringp, ("tag0" "tag1" "tag3" "tag4")

Here's the backtrace:

Debugger entered--Lisp error: (wrong-type-argument stringp ("haxe" "ruby" "blog" "coffeinthevein"))
  string-match("\\[\\[\\([^][]+\\)\\]\\(\\[\\([^][]+\\)\\]\\)?\\]" ("haxe" "ruby" "blog" "coffeinthevein"))
  (if (string-match org-bracket-link-regexp category) (progn (setq l ...) (when ... ... ...)) (if (and org-prefix-category-max-length ...) (setq category ...)))
  (let* ((category ...) (category-icon ...) (category-icon ...) (tag ...) time effort neffort (ts ...) (time-of-day ...) stamp plain s0 s1 s2 rtn srp l duration thecategory) (and (derived-mode-p ...) buffer-file-name (add-to-list ... buffer-file-name)) (when (and dotime time-of-day) (when ... ... ...) (if s1 ...) (if s2 ...) (when ... ...) (when s2 ...)) (when (string-match ... txt) (if ... ... ...)) (when (derived-mode-p ...) (setq effort ...) (when effort ...)) (or effort (setq effort "")) (when remove-re (while ... ...)) (add-text-properties 0 (length txt) (quote ...) txt) (setq time (cond ... ... ...) extra (or ... "") category (if ... ... category) thecategory (copy-sequence category)) (if (string-match org-bracket-link-regexp category) (progn ... ...) (if ... ...)) (setq rtn (concat ... txt)) (remove-text-properties 0 (length rtn) (quote ...) rtn) (org-add-props rtn nil (quote org-category) (if thecategory ... category) (quote tags) (mapcar ... tags) (quote org-highest-priority) org-highest-priority (quote org-lowest-priority) org-lowest-priority (quote time-of-day) time-of-day (quote duration) duration (quote effort) effort (quote effort-minutes) neffort (quote txt) txt (quote time) time (quote extra) extra (quote format) org-prefix-format-compiled (quote dotime) dotime))
  (progn (setq txt (org-trim txt)) (setq txt (org-agenda-fix-displayed-tags txt tags org-agenda-show-inherited-tags org-agenda-hide-tags-regexp)) (let* (... ... ... ... time effort neffort ... ... stamp plain s0 s1 s2 rtn srp l duration thecategory) (and ... buffer-file-name ...) (when ... ... ... ... ... ...) (when ... ...) (when ... ... ...) (or effort ...) (when remove-re ...) (add-text-properties 0 ... ... txt) (setq time ... extra ... category ... thecategory ...) (if ... ... ...) (setq rtn ...) (remove-text-properties 0 ... ... rtn) (org-add-props rtn nil ... ... ... ... ... org-highest-priority ... org-lowest-priority ... time-of-day ... duration ... effort ... neffort ... txt ... time ... extra ... org-prefix-format-compiled ... dotime)))
  (unwind-protect (progn (setq txt ...) (setq txt ...) (let* ... ... ... ... ... ... ... ... ... ... ... ... ...)) (set-match-data save-match-data-internal (quote evaporate)))
  (let ((save-match-data-internal ...)) (unwind-protect (progn ... ... ...) (set-match-data save-match-data-internal ...)))
  (save-match-data (setq txt (org-trim txt)) (setq txt (org-agenda-fix-displayed-tags txt tags org-agenda-show-inherited-tags org-agenda-hide-tags-regexp)) (let* (... ... ... ... time effort neffort ... ... stamp plain s0 s1 s2 rtn srp l duration thecategory) (and ... buffer-file-name ...) (when ... ... ... ... ... ...) (when ... ...) (when ... ... ...) (or effort ...) (when remove-re ...) (add-text-properties 0 ... ... txt) (setq time ... extra ... category ... thecategory ...) (if ... ... ...) (setq rtn ...) (remove-text-properties 0 ... ... rtn) (org-add-props rtn nil ... ... ... ... ... org-highest-priority ... org-lowest-priority ... time-of-day ... duration ... effort ... neffort ... txt ... time ... extra ... org-prefix-format-compiled ... dotime)))
  (let* ((bindings ...) (formatter ...)) (loop for (var value) in bindings do (set var value)) (save-match-data (setq txt ...) (setq txt ...) (let* ... ... ... ... ... ... ... ... ... ... ... ... ...)))
  org-agenda-format-item("" #("cyberchrist haxe engine vs jekyll -- a nice way to see what's haxe is capable of and what is missing from ruby :haxe:ruby:blog:coffeinthevein:" 0 142 (org-category "someday_maybe" fontified nil)) "someday_maybe" ("haxe" "ruby" "blog" "coffeinthevein"))
  (setq txt (org-agenda-format-item "" (concat ... ...) category tags-list) priority (org-get-priority txt))
  (cond ((eq action ...) (and org-highlight-sparse-tree-matches ... ... ...) (org-show-context ...)) ((eq action ...) (setq txt ... priority ...) (goto-char lspos) (setq marker ...) (org-add-props txt props ... marker ... marker ... category ... todo ... priority ... "tagsmatch") (push txt rtn)) ((functionp action) (setq org-map-continue-from nil) (save-excursion ... ...)) (t (error "Invalid action")))
  (progn (cond (... ... ...) (... ... ... ... ... ...) (... ... ...) (t ...)) (unless org-tags-match-list-sublevels (org-end-of-subtree t) (backward-char 1)))
  (if (and (and ... ...) (progn ... t) (or ... ...) (or ... ...)) (progn (cond ... ... ... ...) (unless org-tags-match-list-sublevels ... ...)))
  (when (and (and ... ...) (progn ... t) (or ... ...) (or ... ...)) (cond (... ... ...) (... ... ... ... ... ...) (... ... ...) (t ...)) (unless org-tags-match-list-sublevels (org-end-of-subtree t) (backward-char 1)))
  (catch :skip (setq todo (if ... ...) tags (if ... ...)) (goto-char (setq lspos ...)) (setq level (org-reduced-level ...) category (org-get-category)) (setq i llast llast level) (while (>= i level) (when ... ...) (setq i ...)) (when tags (setq tags ... tags-alist ...)) (setq tags-list (if org-use-tag-inheritance ... tags) org-scanner-tags tags-list) (when org-use-tag-inheritance (setcdr ... ...)) (when (and tags org-use-tag-inheritance ...) (setcdr ... ...)) (when (and ... ... ... ...) (cond ... ... ... ...) (unless org-tags-match-list-sublevels ... ...)))
  (while (re-search-forward re nil t) (setq org-map-continue-from nil) (catch :skip (setq todo ... tags ...) (goto-char ...) (setq level ... category ...) (setq i llast llast level) (while ... ... ...) (when tags ...) (setq tags-list ... org-scanner-tags tags-list) (when org-use-tag-inheritance ...) (when ... ...) (when ... ... ...)) (if org-map-continue-from (goto-char org-map-continue-from) (and ... ...)))
  (save-excursion (goto-char (point-min)) (when (eq action ...) (org-overview) (org-remove-occur-highlights)) (while (re-search-forward re nil t) (setq org-map-continue-from nil) (catch :skip ... ... ... ... ... ... ... ... ... ...) (if org-map-continue-from ... ...)))
  (let* ((re ...) (props ...) (case-fold-search nil) (org-map-continue-from nil) lspos tags tags-list (tags-alist ...) (llast 0) rtn rtn1 level category i txt todo marker entry priority) (when (not ...) (setq action ...)) (save-excursion (goto-char ...) (when ... ... ...) (while ... ... ... ...)) (when (and ... ...) (org-hide-archived-subtrees ... ...)) (nreverse rtn))
  org-scan-tags(agenda (and (progn (setq org-cached-props nil) (member "ruby" tags-list)) t) nil)
  (setq rtn (org-scan-tags (quote agenda) matcher todo-only))
  (save-restriction (if org-agenda-restrict (narrow-to-region org-agenda-restrict-begin org-agenda-restrict-end) (widen)) (setq rtn (org-scan-tags ... matcher todo-only)) (setq rtnall (append rtnall rtn)))
  (save-excursion (save-restriction (if org-agenda-restrict ... ...) (setq rtn ...) (setq rtnall ...)))
  (save-current-buffer (set-buffer buffer) (unless (derived-mode-p ...) (error "Agenda file %s is not in `org-mode'" file)) (save-excursion (save-restriction ... ... ...)))
  (with-current-buffer buffer (unless (derived-mode-p ...) (error "Agenda file %s is not in `org-mode'" file)) (save-excursion (save-restriction ... ... ...)))
  (if (not buffer) (setq rtn (list ...) rtnall (append rtnall rtn)) (with-current-buffer buffer (unless ... ...) (save-excursion ...)))
  (catch (quote nextfile) (org-check-agenda-file file) (setq buffer (if ... ... ...)) (if (not buffer) (setq rtn ... rtnall ...) (with-current-buffer buffer ... ...)))
  (while (setq file (pop files)) (catch (quote nextfile) (org-check-agenda-file file) (setq buffer ...) (if ... ... ...)))
  (catch (quote exit) (if org-agenda-sticky (setq org-agenda-buffer-name ...)) (org-agenda-prepare (concat "TAGS " match)) (org-compile-prefix-format (quote tags)) (org-set-sorting-strategy (quote tags)) (setq org-agenda-query-string match) (setq org-agenda-redo-command (list ... ... ...)) (setq files (org-agenda-files nil ...) rtnall nil) (while (setq file ...) (catch ... ... ... ...)) (if org-agenda-overriding-header (insert ... "\n") (insert "Headlines with TAGS match: ") (add-text-properties ... ... ...) (setq pos ...) (insert match "\n") (add-text-properties pos ... ...) (setq pos ...) (unless org-agenda-multi ...) (add-text-properties pos ... ...)) (org-agenda-mark-header-line (point-min)) (when rtnall (insert ... "\n")) (goto-char (point-min)) (or org-agenda-multi (org-agenda-fit-window-to-buffer)) (add-text-properties (point-min) (point-max) (\` ...)) (org-agenda-finalize) (setq buffer-read-only t))
  (let* ((org-tags-match-list-sublevels org-tags-match-list-sublevels) (completion-ignore-case t) rtn rtnall files file pos matcher buffer) (when (and ... ...) (setq match nil)) (setq matcher (org-make-tags-matcher match) match (car matcher) matcher (cdr matcher)) (catch (quote exit) (if org-agenda-sticky ...) (org-agenda-prepare ...) (org-compile-prefix-format ...) (org-set-sorting-strategy ...) (setq org-agenda-query-string match) (setq org-agenda-redo-command ...) (setq files ... rtnall nil) (while ... ...) (if org-agenda-overriding-header ... ... ... ... ... ... ... ... ...) (org-agenda-mark-header-line ...) (when rtnall ...) (goto-char ...) (or org-agenda-multi ...) (add-text-properties ... ... ...) (org-agenda-finalize) (setq buffer-read-only t)))
  org-tags-view(nil)
  call-interactively(org-tags-view)
  (cond ((setq entry ...) (if ... ... ...)) ((equal org-keys "C") (setq org-agenda-custom-commands org-agenda-custom-commands-orig) (customize-variable ...)) ((equal org-keys "a") (call-interactively ...)) ((equal org-keys "s") (call-interactively ...)) ((equal org-keys "S") (org-call-with-arg ... ...)) ((equal org-keys "t") (call-interactively ...)) ((equal org-keys "T") (org-call-with-arg ... ...)) ((equal org-keys "m") (call-interactively ...)) ((equal org-keys "M") (org-call-with-arg ... ...)) ((equal org-keys "e") (call-interactively ...)) ((equal org-keys "?") (org-tags-view nil "+FLAGGED") (org-add-hook ... ... t t)) ((equal org-keys "L") (unless ... ...) (unless restriction ... ...)) ((equal org-keys "#") (call-interactively ...)) ((equal org-keys "/") (call-interactively ...)) ((equal org-keys "!") (customize-variable ...)) (t (error "Invalid agenda key")))
  (let* ((prefix-descriptions nil) (org-agenda-buffer-name org-agenda-buffer-name) (org-agenda-window-setup ...) (org-agenda-custom-commands-orig org-agenda-custom-commands) (org-agenda-custom-commands ...) (org-agenda-custom-commands ...) (buf ...) (bfn ...) entry key type org-match lprops ans) (unless org-agenda-overriding-restriction (unless ... ...) (setq org-agenda-restrict nil) (move-marker org-agenda-restrict-begin nil) (move-marker org-agenda-restrict-end nil)) (put (quote org-agenda-redo-command) (quote org-lprops) nil) (put (quote org-agenda-redo-command) (quote last-args) nil) (setq org-agenda-last-dispatch-buffer (current-buffer)) (unless org-keys (setq ans ... org-keys ... restriction ...)) (if org-agenda-sticky (setq org-agenda-buffer-name ...)) (when (and ... restriction) (put ... ... ...) (cond ... ...)) (cond (... ...) (... ... ...) (... ...) (... ...) (... ...) (... ...) (... ...) (... ...) (... ...) (... ...) (... ... ...) (... ... ...) (... ...) (... ...) (... ...) (t ...)))
  (catch (quote exit) (let* (... ... ... ... ... ... ... ... entry key type org-match lprops ans) (unless org-agenda-overriding-restriction ... ... ... ...) (put ... ... nil) (put ... ... nil) (setq org-agenda-last-dispatch-buffer ...) (unless org-keys ...) (if org-agenda-sticky ...) (when ... ... ...) (cond ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...)))
  org-agenda(nil)
  call-interactively(org-agenda nil nil)

I can't remember exactly when it started, but I don't remember messing with org sources or installing additional elisp pacakges in the last days. 

Does anyone know what could be wrong?

Thanks in advance,