Homepage: https://github.com/Lindydancer/dynamic-spaces
Author: Anders Lindgren
Updated:
When editing, don't move text separated by spaces
When editing a text, and `dynamic-spaces-mode' is enabled, text
separated by more than one space doesn't move, if possible.
Concretely, end-of-line comments stay in place when you edit the
code and you can edit a field in a table without affecting other
fields.
For example, this is the content of a buffer before an edit (where
`*' represents the cursor):
alpha*gamma delta
one two three
When inserting "beta" without dynamic spaces, the result would be:
alphabeta*gamma delta
one two three
However, with `dynamic-spaces-mode' enabled the result becomes:
alphabeta*gamma delta
one two three
Usage:
To enable *dynamic spaces* for all supported modes, add the
following to a suitable init file:
(dynamic-spaces-global-mode 1)
Or, activate it for a specific major mode:
(add-hook 'example-mode-hook 'dynamic-spaces-mode)
Alternatively, use `M-x customize-group RET dynamic-spaces RET'.
Space groups:
Two pieces of text are considered different (and
`dynamic-spaces-mode' tries to keep then in place) if they are
separated by a "space group". The following is, by default,
considered space groups:
* A TAB character.
* Two or more whitespace characters.
However, the following are *not* considered space groups:
* whitespace in a quoted string.
* Two spaces, when preceded by a punctuation character and
`sentence-end-double-space' is non-nil.
* Two spaces, when preceded by a colon and `colon-double-space' is
non-nil.
Configuration:
You can use the following variables to modify the behavior or
`dynamic-spaces-mode':
* `dynamic-spaces-mode-list' - List of major modes where
dynamic spaces mode should be enabled by the global mode.
* `dynamic-spaces-avoid-mode-list' - List of major modes where
dynamic spaces mode should not be enabled.
* `dynamic-spaces-global-mode-ignore-buffer' - When non-nil in a
buffer, `dynamic-spaces-mode' will not be enabled in that buffer
when `dynamic-spaces-global-mode' is enabled.
* `dynamic-spaces-commands' - Commands that dynamic spaces mode
should adjust spaces for.
* `dynamic-spaces-keys' - Keys, in `kbd' format, that dynamic
spaces mode should adjust spaces for. (This is needed as many
major modes define electric command and bind them to typical edit
keys.)
* `dynamic-spaces-find-next-space-group-function' - A function that
would find the next dynamic space group.
Notes:
By default, this is disabled for org-mode since it interferes with
the org mode table edit system.