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emacs: Add modes for viewing build logs.
* emacs/guix-build-log.el: New file. * emacs.am (ELFILES): Add it. * doc/emacs.texi (Emacs Build Log): Document it. New node. (Emacs Interface): Add it. * doc/guix.texi (Top): Likewise.
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Alex Kost
parent
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4 changed files with 285 additions and 0 deletions
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@ -11,6 +11,7 @@ Guix convenient and fun.
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* Package Management: Emacs Package Management. Managing packages and generations.
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* Popup Interface: Emacs Popup Interface. Magit-like interface for guix commands.
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* Prettify Mode: Emacs Prettify. Abbreviating @file{/gnu/store/@dots{}} file names.
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* Build Log Mode: Emacs Build Log. Highlighting Guix build logs.
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* Completions: Emacs Completions. Completing @command{guix} shell command.
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@end menu
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@ -571,6 +572,36 @@ mode hooks (@pxref{Hooks,,, emacs, The GNU Emacs Manual}), for example:
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@end example
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@node Emacs Build Log
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@section Build Log Mode
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GNU@tie{}Guix provides major and minor modes for highlighting build
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logs. So when you have a file with a package build output---for
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example, a file returned by @command{guix build --log-file @dots{}}
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command (@pxref{Invoking guix build}), you may call @kbd{M-x
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guix-build-log-mode} command in the buffer with this file. This major
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mode highlights some lines specific to build output and provides the
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following key bindings:
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@table @kbd
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@item M-n
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Move to the next build phase.
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@item M-p
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Move to the previous build phase.
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@end table
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There is also @kbd{M-x guix-build-log-minor-mode} which also provides
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the same highlighting (but not key bindings). And as it is a minor
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mode, it can be enabled in any buffer. For example, if you are building
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some package in a shell buffer (@pxref{Interactive Shell,,, emacs, The
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GNU Emacs Manual}), you may enable @command{guix-build-log-minor-mode}
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to make it more colorful. Guix build output is rather specific, so this
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new highlighting shouldn't conflict with the existing one.
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@node Emacs Completions
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@section Shell Completions
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@ -114,6 +114,7 @@ Emacs Interface
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* Package Management: Emacs Package Management. Managing packages and generations.
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* Popup Interface: Emacs Popup Interface. Magit-like interface for guix commands.
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* Prettify Mode: Emacs Prettify. Abbreviating @file{/gnu/store/@dots{}} file names.
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* Build Log Mode: Emacs Build Log. Highlighting Guix build logs.
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* Completions: Emacs Completions. Completing @command{guix} shell command.
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Programming Interface
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1
emacs.am
1
emacs.am
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@ -21,6 +21,7 @@ AUTOLOADS = emacs/guix-autoloads.el
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ELFILES = \
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emacs/guix-backend.el \
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emacs/guix-base.el \
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emacs/guix-build-log.el \
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emacs/guix-command.el \
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emacs/guix-emacs.el \
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emacs/guix-external.el \
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252
emacs/guix-build-log.el
Normal file
252
emacs/guix-build-log.el
Normal file
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@ -0,0 +1,252 @@
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;;; guix-build-log.el --- Major and minor modes for build logs -*- lexical-binding: t -*-
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;; Copyright © 2015 Alex Kost <alezost@gmail.com>
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;; This file is part of GNU Guix.
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;; GNU Guix is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; GNU Guix is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with this program. If not, see <http://www.gnu.org/licenses/>.
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;;; Commentary:
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;; This file provides a major mode (`guix-build-log-mode') and a minor mode
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;; (`guix-build-log-minor-mode') for highlighting Guix build logs.
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;;; Code:
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(defgroup guix-build-log nil
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"Settings for `guix-build-log-mode'."
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:group 'guix)
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(defgroup guix-build-log-faces nil
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"Faces for `guix-build-log-mode'."
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:group 'guix-build-log
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:group 'guix-faces)
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(defface guix-build-log-title-head
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'((t :inherit font-lock-keyword-face))
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"Face for '@' symbol of a log title."
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:group 'guix-build-log-faces)
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(defface guix-build-log-title-start
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'((t :inherit guix-build-log-title-head))
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"Face for a log title denoting a start of a process."
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:group 'guix-build-log-faces)
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(defface guix-build-log-title-success
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'((t :inherit guix-build-log-title-head))
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"Face for a log title denoting a successful end of a process."
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:group 'guix-build-log-faces)
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(defface guix-build-log-title-fail
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'((t :inherit error))
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"Face for a log title denoting a failed end of a process."
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:group 'guix-build-log-faces)
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(defface guix-build-log-title-end
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'((t :inherit guix-build-log-title-head))
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"Face for a log title denoting an undefined end of a process."
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:group 'guix-build-log-faces)
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(defface guix-build-log-phase-name
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'((t :inherit font-lock-function-name-face))
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"Face for a phase name."
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:group 'guix-build-log-faces)
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(defface guix-build-log-phase-start
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'((default :weight bold)
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(((class grayscale) (background light)) :foreground "Gray90")
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(((class grayscale) (background dark)) :foreground "DimGray")
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(((class color) (min-colors 16) (background light))
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:foreground "DarkGreen")
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(((class color) (min-colors 16) (background dark))
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:foreground "LimeGreen")
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(((class color) (min-colors 8)) :foreground "green"))
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"Face for the start line of a phase."
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:group 'guix-build-log-faces)
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(defface guix-build-log-phase-end
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'((((class grayscale) (background light)) :foreground "Gray90")
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(((class grayscale) (background dark)) :foreground "DimGray")
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(((class color) (min-colors 16) (background light))
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:foreground "ForestGreen")
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(((class color) (min-colors 16) (background dark))
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:foreground "LightGreen")
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(((class color) (min-colors 8)) :foreground "green")
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(t :weight bold))
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"Face for the end line of a phase."
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:group 'guix-build-log-faces)
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(defface guix-build-log-phase-success
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'((t))
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"Face for the 'succeeded' word of a phase line."
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:group 'guix-build-log-faces)
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(defface guix-build-log-phase-fail
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'((t :inherit error))
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"Face for the 'failed' word of a phase line."
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:group 'guix-build-log-faces)
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(defface guix-build-log-phase-seconds
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'((t :inherit font-lock-constant-face))
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"Face for the number of seconds for a phase."
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:group 'guix-build-log-faces)
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(defcustom guix-build-log-mode-hook
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;; Not using `compilation-minor-mode' because it rebinds some standard
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;; keys, including M-n/M-p.
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'(compilation-shell-minor-mode view-mode)
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"Hook run after `guix-build-log-mode' is entered."
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:type 'hook
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:group 'guix-build-log)
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(defvar guix-build-log-phase-name-regexp "`\\([^']+\\)'"
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"Regexp for a phase name.")
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(defvar guix-build-log-phase-start-regexp
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(concat "^starting phase " guix-build-log-phase-name-regexp)
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"Regexp for the start line of a 'build' phase.")
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(defun guix-build-log-title-regexp (&optional state)
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"Return regexp for the log title.
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STATE is a symbol denoting a state of the title. It should be
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`start', `fail', `success' or `nil' (for a regexp matching any
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state)."
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(let* ((word-rx (rx (1+ (any word "-"))))
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(state-rx (cond ((eq state 'start) (concat word-rx "started"))
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((eq state 'success) (concat word-rx "succeeded"))
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((eq state 'fail) (concat word-rx "failed"))
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(t word-rx))))
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(rx-to-string
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`(and bol (group "@") " " (group (regexp ,state-rx)))
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t)))
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(defun guix-build-log-phase-end-regexp (&optional state)
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"Return regexp for the end line of a 'build' phase.
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STATE is a symbol denoting how a build phase was ended. It should be
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`fail', `success' or `nil' (for a regexp matching any state)."
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(let ((state-rx (cond ((eq state 'success) "succeeded")
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((eq state 'fail) "failed")
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(t (regexp-opt '("succeeded" "failed"))))))
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(rx-to-string
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`(and bol "phase " (regexp ,guix-build-log-phase-name-regexp)
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" " (group (regexp ,state-rx)) " after "
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(group (1+ digit)) " seconds")
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t)))
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(defvar guix-build-log-font-lock-keywords
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`((,(guix-build-log-title-regexp 'start)
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(1 'guix-build-log-title-head)
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(2 'guix-build-log-title-start))
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(,(guix-build-log-title-regexp 'success)
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(1 'guix-build-log-title-head)
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(2 'guix-build-log-title-success))
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(,(guix-build-log-title-regexp 'fail)
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(1 'guix-build-log-title-head)
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(2 'guix-build-log-title-fail))
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(,(guix-build-log-title-regexp)
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(1 'guix-build-log-title-head)
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(2 'guix-build-log-title-end))
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(,guix-build-log-phase-start-regexp
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(0 'guix-build-log-phase-start)
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(1 'guix-build-log-phase-name prepend))
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(,(guix-build-log-phase-end-regexp 'success)
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(0 'guix-build-log-phase-end)
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(1 'guix-build-log-phase-name prepend)
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(2 'guix-build-log-phase-success prepend)
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(3 'guix-build-log-phase-seconds prepend))
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(,(guix-build-log-phase-end-regexp 'fail)
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(0 'guix-build-log-phase-end)
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(1 'guix-build-log-phase-name prepend)
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(2 'guix-build-log-phase-fail prepend)
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(3 'guix-build-log-phase-seconds prepend)))
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"A list of `font-lock-keywords' for `guix-build-log-mode'.")
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(defvar guix-build-log-mode-map
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(let ((map (make-sparse-keymap)))
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(set-keymap-parent map special-mode-map)
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(define-key map (kbd "M-n") 'guix-build-log-next-phase)
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(define-key map (kbd "M-p") 'guix-build-log-previous-phase)
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map)
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"Keymap for `guix-build-log-mode' buffers.")
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(defun guix-build-log-next-phase (&optional arg)
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"Move to the next build phase.
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With ARG, do it that many times. Negative ARG means move
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backward."
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(interactive "^p")
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(if arg
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(when (zerop arg) (user-error "Try again"))
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(setq arg 1))
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(let ((search-fun (if (> arg 0)
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#'re-search-forward
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#'re-search-backward))
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(n (abs arg))
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found last-found)
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(save-excursion
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(end-of-line (if (> arg 0) 1 0)) ; skip the current line
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(while (and (not (zerop n))
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(setq found
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(funcall search-fun
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guix-build-log-phase-start-regexp
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nil t)))
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(setq n (1- n)
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last-found found)))
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(when last-found
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(goto-char last-found)
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(forward-line 0))
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(or found
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(user-error (if (> arg 0)
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"No next build phase"
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"No previous build phase")))))
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(defun guix-build-log-previous-phase (&optional arg)
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"Move to the previous build phase.
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With ARG, do it that many times. Negative ARG means move
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forward."
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(interactive "^p")
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(guix-build-log-next-phase (- (or arg 1))))
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;;;###autoload
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(define-derived-mode guix-build-log-mode special-mode
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"Guix-Build-Log"
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"Major mode for viewing Guix build logs.
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\\{guix-build-log-mode-map}"
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(setq font-lock-defaults '(guix-build-log-font-lock-keywords t)))
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;;;###autoload
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(define-minor-mode guix-build-log-minor-mode
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"Toggle Guix Build Log minor mode.
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With a prefix argument ARG, enable Guix Build Log minor mode if
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ARG is positive, and disable it otherwise. If called from Lisp,
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enable the mode if ARG is omitted or nil.
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When Guix Build Log minor mode is enabled, it highlights build
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log in the current buffer. This mode can be enabled
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programmatically using hooks:
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(add-hook 'shell-mode-hook 'guix-build-log-minor-mode)"
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:init-value nil
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:lighter " Guix-Build-Log"
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:group 'guix-build-log
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(if guix-build-log-minor-mode
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(font-lock-add-keywords nil guix-build-log-font-lock-keywords)
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(font-lock-remove-keywords nil guix-build-log-font-lock-keywords))
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(when font-lock-mode
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(font-lock-fontify-buffer)))
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(provide 'guix-build-log)
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;;; guix-build-log.el ends here
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