57 lines
2.1 KiB
EmacsLisp
57 lines
2.1 KiB
EmacsLisp
;;; editor/format/config.el -*- lexical-binding: t; -*-
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(defvar +format-on-save-enabled-modes
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'(not emacs-lisp-mode ; elisp's mechanisms are good enough
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sql-mode) ; sqlformat is currently broken
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"A list of major modes in which to reformat the buffer upon saving.
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If this list begins with `not', then it negates the list.
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If it is `t', it is enabled in all modes.
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If nil, it is disabled in all modes, the same as if the +onsave flag wasn't
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used at all.
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Irrelevant if you do not have the +onsave flag enabled for this module.")
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(defvar +format-preserve-indentation t
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"If non-nil, the leading indentation is preserved when formatting the whole
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buffer. This is particularly useful for partials.
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Indentation is always preserved when formatting regions.")
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(defvar-local +format-with nil
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"Set this to explicitly use a certain formatter for the current buffer.")
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;;
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;;; Bootstrap
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(defun +format|enable-on-save-maybe ()
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"Enable formatting on save in certain major modes.
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This is controlled by `+format-on-save-enabled-modes'."
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(unless (or (eq major-mode 'fundamental-mode)
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(cond ((booleanp +format-on-save-enabled-modes)
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(null +format-on-save-enabled-modes))
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((eq (car +format-on-save-enabled-modes) 'not)
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(memq major-mode (cdr +format-on-save-enabled-modes)))
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((not (memq major-mode +format-on-save-enabled-modes))))
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(not (require 'format-all nil t)))
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(format-all-mode +1)))
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(when (featurep! +onsave)
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(add-hook 'after-change-major-mode-hook #'+format|enable-on-save-maybe))
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;;
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;;; Hacks
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;; Allow a specific formatter to be used by setting `+format-with', either
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;; buffer-locally or let-bound.
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(advice-add #'format-all--probe :around #'+format*probe)
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;; Doom uses a modded `format-all-buffer', which
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;; 1. Enables partial reformatting (while preserving leading indentation),
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;; 2. Applies changes via RCS patch, line by line, to protect buffer markers
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;; and avoid any jarring cursor+window scrolling.
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(advice-add #'format-all-buffer :override #'+format/buffer)
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