diff options
Diffstat (limited to 'modules/system-defaults.el')
| -rw-r--r-- | modules/system-defaults.el | 58 |
1 files changed, 49 insertions, 9 deletions
diff --git a/modules/system-defaults.el b/modules/system-defaults.el index 7f369a5e..47bd1505 100644 --- a/modules/system-defaults.el +++ b/modules/system-defaults.el @@ -55,6 +55,10 @@ (expand-file-name "comp-warnings.log" user-emacs-directory) "File where native-comp warnings will be appended.") +(defvar cj/comp-warnings-log-max-bytes (* 512 1024) + "Cap on `comp-warnings-log' size. Once it exceeds this, the log is reset +before the next write, so native-comp warnings can't grow it without bound.") + (defun cj/log-comp-warning (type message &rest args) "Log native-comp warnings of TYPE with MESSAGE & ARGS. Log to buffer `comp-warnings-log'. Suppress warnings from appearing in the @@ -62,18 +66,53 @@ Log to buffer `comp-warnings-log'. Suppress warnings from appearing in the timestamp to the file specified by `comp-warnings-log'. Return non-nil to indicate the warning was handled." (when (memq 'comp (if (listp type) type (list type))) - (with-temp-buffer - (insert (format-time-string "[%Y-%m-%d %H:%M:%S] ")) - (insert (if (stringp message) - (apply #'format message args) - (format "%S %S" message args))) - (insert "\n") - (append-to-file (point-min) (point-max) comp-warnings-log)) + ;; Reset the log if it has grown past the cap, so async comp warnings can't + ;; grow it without bound. + (when (ignore-errors + (> (or (file-attribute-size (file-attributes comp-warnings-log)) 0) + cj/comp-warnings-log-max-bytes)) + (ignore-errors (delete-file comp-warnings-log))) + ;; Guard the write: this runs as `:before-until' advice on `display-warning', + ;; so a signal here (an unwritable log path) would propagate out and break + ;; warning display for every async comp notice. Swallow the failure; the + ;; warning stays suppressed either way. + (ignore-errors + (with-temp-buffer + (insert (format-time-string "[%Y-%m-%d %H:%M:%S] ")) + (insert (if (stringp message) + (apply #'format message args) + (format "%S %S" message args))) + (insert "\n") + (append-to-file (point-min) (point-max) comp-warnings-log))) ;; Return non-nil to tell `display-warning' “we handled it.” t)) (advice-add 'display-warning :before-until #'cj/log-comp-warning) +;; ------------------ Deferred Daemon Warnings vs. Frame Creation ----------------- + +;; Emacs 31's warnings.el defers warnings raised during daemon startup: it puts +;; a one-shot closure on `after-make-frame-functions' holding the *Warnings* +;; buffer object and calls `warning--display-buffer' on it when the first +;; client frame is made. If that buffer died in between, `display-buffer' +;; signals inside `make-frame', server.el reports "-window-system-unsupported", +;; and emacsclient retries on $DISPLAY -- the first frame of the session +;; silently opens on XWayland. Keeping *Warnings* alive is the root fix +;; (undead-buffers.el); this guard is the backstop, so no future buffer sweep +;; can break frame creation the same way. The function only exists from +;; Emacs 31; advising an undefined symbol is harmless and takes effect once +;; warnings.el defines it. + +(defun cj/warning--display-buffer-if-live (orig buffer) + "Call ORIG with BUFFER only when it names or is a live buffer. +Around advice for `warning--display-buffer'. BUFFER may be a buffer object +or a buffer name, like `display-buffer' accepts. Return nil when skipped." + (let ((buf (and buffer (get-buffer buffer)))) + (when (buffer-live-p buf) + (funcall orig buf)))) + +(advice-add 'warning--display-buffer :around #'cj/warning--display-buffer-if-live) + ;; ---------------------------------- Unicode ---------------------------------- (set-locale-environment "en_US.UTF-8") @@ -212,8 +251,9 @@ appears only once per session." (setq ad-redefinition-action 'accept) ;; silence warnings about advised functions getting redefined. (setq large-file-warning-threshold nil) ;; open files regardless of size (setq use-short-answers t) ;; single-key y/n for ordinary yes-or-no-p prompts - ;; (irreversible actions use `cj/confirm-strong', which - ;; forces a typed "yes" by binding this nil for that call) + ;; (irreversible actions use `cj/confirm-destructive', + ;; also one key, but it ignores RET and space so a stray + ;; keystroke re-prompts instead of confirming) (setq auto-revert-verbose nil) ;; turn off auto revert messages (setq custom-safe-themes t) ;; treat all themes as safe (stop asking) (setq server-client-instructions nil) ;; I already know what to do when done with the frame |