cli: merge 'fields' with 'info' command

Update the 'info' command to handle 'fields' as well; remove
fields.

man/meson.build

@@ -50,7 +50,6 @@ man_orgs=[
   'mu-cfind.1.org',
   'mu-easy.7.org',
   'mu-extract.1.org',
-  'mu-fields.1.org',
   'mu-find.1.org',
   'mu-help.1.org',
   'mu-index.1.org',

man/mu-fields.1.org

@@ -1,24 +0,0 @@
-#+TITLE: MU FIELDS
-#+MAN_CLASS_OPTIONS: :section-id "@SECTION_ID@" :date "@MAN_DATE@"
-
-
-* NAME
-
-*mu fields* - list all message fields
-
-* SYNOPSIS
-
-*mu [common-options] fields
-
-* DESCRIPTION
-
-*mu fields* is the *mu* command for showing a table of message fields and their
-properties.
-
-#+include: "common-options.inc" :minlevel 1
-
-#+include: "prefooter.inc" :minlevel 1
-
-* SEE ALSO
-
-*mu(1)*

man/mu-info.1.org

@@ -3,15 +3,21 @@
 
 * NAME
 
-~mu info~  - show information about the mu database
+~mu info~  - show information
 
 * SYNOPSIS
 
-*mu [common options] info*
+*mu [common options] info [<topic>]*
 
 * DESCRIPTION
 
-~mu info~ is the ~mu~ command for getting information about the mu database. Note
+~mu info~ is the ~mu~ command for getting information about various topics:
+
+- *common*: general mu build information
+- *store*: information about the message store
+- *fields*: table with all the query fields and flags
+
+about the mu database. Note
 that while running (e.g. ~mu4e~), some of the information may be slightly delayed
 due to database caching.
 
@@ -23,4 +29,4 @@ due to database caching.
 
 * SEE ALSO
 
-*maildir(5)*, *mu(1)*
+*mu(1)*