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Showing content from https://github.com/phillord/m-buffer-el below:

phillord/m-buffer-el: List Oriented Buffer Operations for Emacs

This package provides a set of list-orientated functions for operating over the contents of Emacs buffers. Functions are generally purish: i.e. they may change the state of one buffer by side-effect, but should not affect point, current buffer, match data or so forth. Generally, markers are preferred over point locations so that it is possible, for example, to search for regexp matches and then replace them all without the early replacement invalidating the location of the later ones.

m-buffer is now documented at http://phillord.github.io/m-buffer-el/ or live in Emacs with Lentic Server.

The code is now in active use. APIs are open to change, but I am not intending to.

Version 0.14 did not support Emacs-24, which unintentionally broke assess.el which needs to work on these platforms. Emacs-24 is now supported again.

Contributions are welcome. However, I would like to keep the option of hosting m-buffer.el on ELPA, therefore, contributors should have Copyright Assignment papers with the FSF.

Support Emacs-24 again

New function added m-buffer-match-multi

New function added m-buffer-at-string

• m-buffer was actually moving point, because the state was saved before changing buffer.
• The benchmark documentation file was being compiled and run on installation, when it is supposed to serve as static documentation.

New funtion added: m-buffer-partition-by-marker

This release mostly includes considerably improved documentation.

There is one change which is half-way between a breaking change and a bug fix. Previously, in the m-buffer-match-* functions "match" arguments could take any keyword argument and these would over-ride any arguments already set. This means that a call such as:

(m-buffer-match-page (current-buffer) :regexp "this")

would behave the same as:

(m-buffer-match (current-buffer) :regexp "this")

rather than matching pages. Alternatively, this call:

(m-buffer-match-line
   (current-buffer)
   :post-match (lambda () t))

never terminates. Both of these now throw an error instead.

• m-buffer-match-* functions now error on conflicting arguments

• m-buffer-replace-match no longer moves point

• Now byte-compiles without errors/warning

• m-buffer-point' renamed to m-buffer-at-point'

• New macros for marker usage.
• m-buffer-at added. New stateless functions for information about Emacs buffers.

• File organisation has been refactored with some macros moved out of m-buffer.el

• `m-buffer-match-first-line' added.

• All match functions now take a :numeric argument which forces the return of numbers rather than markers.
• Two new functions for subtracting one set of matches from another: m-buffer-match-subtract and m-buffer-match-exact-subtract
• m-buffer-with-markers is a let* like macro which autonils markers after use.
• m-buffer-with-current-location is like with-current-buffer but also takes a location.
• m-buffer-with-current-marker is like with-current-buffer but takes a marker.

• Automated Testing with Cask

• m-buffer-replace-match optional arguments now expanded to match replace-match. This means the 3rd argument has changed meaning.

• m-buffer-match-data has become m-buffer-match
• Testing is now via Cask

• m-buffer-delete-match

• Various functions for colourising/adding faces
• Documentation improvements.
• m-buffer-nil-markers has been depluralised to m-buffer-nil-marker
• m-buffer-replace-match now returns start end markers
• m-buffer-clone-markers added.

• Functions for matching block things -- line start and end, sentence end, paragraph separators, words.
• m-buffer-match-string and m-buffer-match-substring for extracting match-strings.

• Functions now use singular rather than plural -- so m-buffer-matches-data has become m-buffer-match-data.
• All uses of beginning have been changed to begin -- it is shorter and matches end

• Regexp functions are now overloaded and take either a buffer and regexp or match-data (except for m-buffer-match-data for which it makes no sense to pass in match-data). This allows easy chaining of methods.
• Matchers now also overloaded for windows -- searching in the visible portion of window. m-buffer-match-data-visible-window access this feature directly.
• Match Options are now keyword rather than positional which considerably simplifies the implementation, especially with an eye to future expansion.

• Reworked tests and build scripts.

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