Variable: dabbrev-abbrev-char-regexp

dabbrev-abbrev-char-regexp is a customizable variable defined in dabbrev.el.gz.

Value

nil

Documentation

Regexp to recognize a character in an abbreviation or expansion.

This regexp will be surrounded with \\( ... \\) when actually used.

Set this variable to "\\\\sw" if you want ordinary words or
"\\\\sw\\\\|\\\\s_" if you want symbols (including characters
whose syntax is "symbol" as well as those whose syntax is
"word"). The abbreviation is from point to the start of the
previous sequence of characters matching this variable.

The default value of nil is equivalent to "\\\\sw\\\\|\\\\s_".

For instance, suppose the current buffer is in c-mode. If this variable is nil or "\\\\sw\\\\|\\\\s_", then expanding debug_print_in_ looks for a symbol starting with debug_print_in_. If you set this variable to "\\\\sw", that expansion looks for a word prefixed with in_ (e.g., it would match in_range, but not in_close_range). If expanding debug_print_in it would look for a word starting with in (e.g. integer).

View in manual

Source Code

;; Defined in /usr/src/emacs/lisp/dabbrev.el.gz
;;;###autoload(put 'dabbrev-case-replace 'risky-local-variable t)

(defcustom dabbrev-abbrev-char-regexp nil
  "Regexp to recognize a character in an abbreviation or expansion.
This regexp will be surrounded with \\\\( ... \\\\) when actually used.

Set this variable to \"\\\\sw\" if you want ordinary words or
\"\\\\sw\\\\|\\\\s_\" if you want symbols (including characters
whose syntax is \"symbol\" as well as those whose syntax is
\"word\").  The abbreviation is from point to the start of the
previous sequence of characters matching this variable.

The default value of nil is equivalent to \"\\\\sw\\\\|\\\\s_\".

For instance, suppose the current buffer is in `c-mode'.  If this
variable is nil or \"\\\\sw\\\\|\\\\s_\", then expanding
`debug_print_in_' looks for a symbol starting with
`debug_print_in_'.  If you set this variable to \"\\\\sw\", that
expansion looks for a word prefixed with `in_' (e.g., it would
match `in_range', but not `in_close_range').  If expanding
`debug_print_in' it would look for a word starting with
`in' (e.g. `integer')."
  :type '(choice (const nil)
		 regexp)
  :group 'dabbrev)