editorconfig.el: Hook elsewhere for the coding-system #356
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Until now, the file's coding system was set via an advice on `insert-file-contents`, which depends on being called from within the `find-file-noselect` advice. While it mostly works, it doesn't account for all the cases (e.g. it fails to be used when doing `write-region`), is a bit cumbersome, and does not interact well with Emacs's other ways to specify a coding-system, such as `auto-coding-alist`. This patch replaces it with an advice on `find-auto-coding`, so as to integrate better with the rest of Emacs's handling of files' coding systems. An immediate benefit is that we don't need to special case jar and zip files any more because `auto-coding-alist` does it for us already (and for many more file types like tar, exe, ...). * editorconfig.el (editorconfig-merge-coding-systems): Use `merge-coding-systems` only when merging is actually necessary. (editorconfig-set-coding-system-revert): Adjust accordingly. (editorconfig--filename-codingsystem-hash): Delete variable. (editorconfig--advice-insert-file-contents): Delete function. (editorconfig--advice-find-auto-coding): New function. (editorconfig--advice-find-file-noselect): Don't mess with coding systems any more. (editorconfig--getting-coding-system): New var. (editorconfig--get-coding-system): New function. (editorconfig-mode): Advise `find-auto-coding` instead of `insert-file-contents`. (editorconfig-version): Use `package-get-version` when available. (find-library-name, lm-version): Move their declaration to the place where we have a good reason to think they're defined. (editorconfig-exclude-regexps): Remove jar and zip patterns, not needed any more.
The new way coding-system are applied means that `buffer-file-coding-system` is not set when opening a non-existing file. Instead that happens when the file gets saved. Adjust the test accordingly. * ert-tests/editorconfig-tests.el (test-charset):
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Yay! Thanks!
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Until now, the file's coding system was set via an advice on
insert-file-contents, which depends on being called from within thefind-file-noselectadvice.While it mostly works, it doesn't account for all the cases (e.g. it fails to be used when doing
write-region), is a bit cumbersome, and does not interact well with Emacs's other ways to specify a coding-system, such asauto-coding-alist.This patch replaces it with an advice on
find-auto-coding, so as to integrate better with the rest of Emacs's handling of files' coding systems. An immediate benefit is that we don't need to special case jar and zip files any more becauseauto-coding-alistdoes it for us already (and for many more file types like tar, exe, ...).merge-coding-systemsonly when merging is actually necessary. (editorconfig-set-coding-system-revert): Adjust accordingly. (editorconfig--filename-codingsystem-hash): Delete variable. (editorconfig--advice-insert-file-contents): Delete function. (editorconfig--advice-find-auto-coding): New function. (editorconfig--advice-find-file-noselect): Don't mess with coding systems any more.(editorconfig--getting-coding-system): New var.
(editorconfig--get-coding-system): New function.
(editorconfig-mode): Advise
find-auto-codinginstead ofinsert-file-contents.(editorconfig-version): Use
package-get-versionwhen available. (find-library-name, lm-version): Move their declaration to the place where we have a good reason to think they're defined. (editorconfig-exclude-regexps): Remove jar and zip patterns, not needed any more.