[PATCH 4/6] doc: emacs: Add "Locations" section.

[Alex Kost]

* doc/emacs.texi (Emacs Commands): Move description of 'guix-edit'
command to...
(Emacs Locations): ... here.  Document 'guix-find-location'.  New
section.
* doc/guix.texi (Top): Add it.
---
 doc/emacs.texi | 63 ++++++++++++++++++++++++++++++++++++----------------------
 doc/guix.texi  |  1 +
 2 files changed, 40 insertions(+), 24 deletions(-)

diff --git a/doc/emacs.texi b/doc/emacs.texi
index 16ff4d5..5a5fbc2 100644
--- a/doc/emacs.texi
+++ b/doc/emacs.texi
@@ -10,6 +10,7 @@ Guix convenient and fun.
 * Initial Setup: Emacs Initial Setup.  Preparing @file{~/.emacs}.
 * Package Management: Emacs Package Management.        Managing packages and 
generations.
 * Licenses: Emacs Licenses.            Interface for licenses of Guix packages.
+* Locations: Emacs Locations.          Interface for package locations.
 * Popup Interface: Emacs Popup Interface.      Magit-like interface for guix 
commands.
 * Prettify Mode: Emacs Prettify.       Abbreviating @file{/gnu/store/@dots{}} 
file names.
 * Build Log Mode: Emacs Build Log.     Highlighting Guix build logs.
@@ -220,30 +221,6 @@ With @kbd{C-u}, make it verbose.
 Once @command{guix pull} has succeeded, the Guix REPL is restared.  This
 allows you to keep using the Emacs interface with the updated Guix.
 
-Finally, there is an Emacs variant of @command{guix edit} command
-(@pxref{Invoking guix edit}):
-
address@hidden @kbd
address@hidden M-x guix-edit
-As with @kbd{M-x guix-packages-by-name}, you can press @key{TAB} to
-complete a package name.
address@hidden table
-
-If you are contributing to Guix, you may find it useful for @kbd{M-x
-guix-edit} to open package files from your git directory.  This can be
-done by setting @code{guix-directory} variable.  For example, after
-this:
-
address@hidden
-(setq guix-directory "~/src/guix")
address@hidden example
-
address@hidden guix-edit guix} opens
address@hidden/src/guix/gnu/packages/package-management.scm} file.
-
-Also you can use @kbd{C-u} prefix argument to specify a directory just
-for the current @kbd{M-x guix-edit} command.
-
 
 @node Emacs General info
 @subsection General information
@@ -568,6 +545,44 @@ guix-packages-by-license} would do (@pxref{Emacs 
Commands}).
 @end table
 
 
address@hidden Emacs Locations
address@hidden Locations
+
+As you know, package definitions are placed in Guile files, also known
+as @dfn{package locations}.  The following commands should help you not
+getting lost in these locations:
+
address@hidden @kbd
+
address@hidden M-x guix-find-location
+Find package location file (press @key{TAB} to choose a location from a
+completion list).
+
address@hidden M-x guix-edit
+Find location of a specified package.  This is an Emacs analog of
address@hidden edit} command (@pxref{Invoking guix edit}).  As with
address@hidden guix-packages-by-name}, you can press @key{TAB} to complete a
+package name.
+
address@hidden table
+
+If you are contributing to Guix, you may find it useful for @kbd{M-x
+guix-find-location} and @kbd{M-x guix-edit} to open locations from your
+git directory.  This can be done by setting @code{guix-directory}
+variable.  For example, after this:
+
address@hidden
+(setq guix-directory "~/src/guix")
address@hidden example
+
address@hidden guix-edit guix} opens
address@hidden/src/guix/gnu/packages/package-management.scm} file.
+
+Also you can use @kbd{C-u} prefix argument to specify a directory just
+for the current @kbd{M-x guix-find-location} or @kbd{M-x guix-edit}
+command.
+
+
 @node Emacs Popup Interface
 @section Popup Interface
 
diff --git a/doc/guix.texi b/doc/guix.texi
index a34d547..710adbd 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -118,6 +118,7 @@ Emacs Interface
 * Initial Setup: Emacs Initial Setup.  Preparing @file{~/.emacs}.
 * Package Management: Emacs Package Management.        Managing packages and 
generations.
 * Licenses: Emacs Licenses.            Interface for licenses of Guix packages.
+* Locations: Emacs Locations.          Interface for package locations.
 * Popup Interface: Emacs Popup Interface.      Magit-like interface for guix 
commands.
 * Prettify Mode: Emacs Prettify.       Abbreviating @file{/gnu/store/@dots{}} 
file names.
 * Build Log Mode: Emacs Build Log.     Highlighting Guix build logs.
-- 
2.7.3