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elisp: SMIE Customization

 
 22.7.1.9 Customizing Indentation
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 If you are using a mode whose indentation is provided by SMIE, you can
 customize the indentation to suit your preferences.  You can do this on
 a per-mode basis (using the option ‘smie-config’), or a per-file basis
 (using the function ‘smie-config-local’ in a file-local variable
 specification).
 
  -- User Option: smie-config
      This option lets you customize indentation on a per-mode basis.  It
      is an alist with elements of the form ‘(MODE . RULES)’.  For the
      precise form of rules, see the variable’s documentation; but you
      may find it easier to use the command ‘smie-config-guess’.
 
  -- Command: smie-config-guess
      This command tries to work out appropriate settings to produce your
      preferred style of indentation.  Simply call the command while
      visiting a file that is indented with your style.
 
  -- Command: smie-config-save
      Call this command after using ‘smie-config-guess’, to save your
      settings for future sessions.
 
  -- Command: smie-config-show-indent &optional move
      This command displays the rules that are used to indent the current
      line.
 
  -- Command: smie-config-set-indent
      This command adds a local rule to adjust the indentation of the
      current line.
 
  -- Function: smie-config-local rules
      This function adds RULES as indentation rules for the current
      buffer.  These add to any mode-specific rules defined by the
      ‘smie-config’ option.  To specify custom indentation rules for a
      specific file, add an entry to the file’s local variables of the
      form: ‘eval: (smie-config-local '(RULES))’.
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