When you run
hugo server
the static web-site generator Hugo creates a local server that you can use to fine-tune your pages. Hugo sits and watches your content and layout directory for any changes. Whenever a file changes, it re-renders the pages and even tells your browser to live-relead the pages.
Very nice.
Except that it doesn’t work with Emacs. But there’s a cure.
The problem
The problem is that Emacs creates lockfiles and Hugo triggers detects those lockfiles, but get’s confused. Here is such a lockfile:
schurig@desktop:~/www.hugo/content/en$ ll
total 24
-rw-r--r-- 1 schurig schurig 988 Apr 1 08:55 bash-aliases.md
-rw-r--r-- 1 schurig schurig 1759 Apr 1 08:55 blogging-with-sitecopy.md
drwxr-xr-x 2 schurig schurig 4096 Apr 1 08:55 emacs-blog-from-org-to-hugo/
-rw-r--r-- 1 schurig schurig 6503 Apr 1 08:55 emacs-blog-from-org-to-hugo.md
-rw-r--r-- 1 schurig schurig 3593 Apr 1 08:55 emacs-init-tangle.md
lrwxrwxrwx 1 schurig schurig 21 Apr 1 08:58 .#let-hugo-ignore-emacs-lockfiles.md -> schurig@desktop.28219
(Note: ll is described in bash aliases).
The cure
Setting ignoreFiles in config.toml won’t help. The file system watcher doesn’t care
about the ignoreFile setting.
I finally fixed this with a patch to Hugo:
diff --git a/commands/hugo.go b/commands/hugo.go
index 131879c..1ed9823 100644
--- a/commands/hugo.go
+++ b/commands/hugo.go
@@ -732,12 +732,14 @@ func NewWatcher(port int) error {
for _, ev := range evs {
ext := filepath.Ext(ev.Name)
+ base := filepath.Base(ev.Name)
istemp := strings.HasSuffix(ext, "~") ||
(ext == ".swp") ||
(ext == ".swx") ||
(ext == ".tmp") ||
(ext == ".DS_Store") ||
filepath.Base(ev.Name) == "4913" ||
+ strings.HasPrefix(base, ".#") || // Emacs lock files
strings.HasPrefix(ext, ".goutputstream") ||
strings.HasSuffix(ext, "jb_old___") ||
strings.HasSuffix(ext, "jb_bak___")