[PATCH 2/4] doc: flow: update with newer tools, note forkability

[Eric Wong <e@80x24.org>]

public-inbox-{clone,fetch,netd} are all relatively new
developments which we can document, here.

We'll also update the generator Makefile snippet since there may
be more Graph::Easy-based docs coming.
---
 Documentation/flow.ge    | 13 +++++++++----
 Documentation/flow.txt   | 18 ++++++++++++------
 Documentation/include.mk | 15 +++++++++------
 3 files changed, 30 insertions(+), 16 deletions(-)

diff --git a/Documentation/flow.ge b/Documentation/flow.ge
index 4308989a..5ad92fec 100644
--- a/Documentation/flow.ge
+++ b/Documentation/flow.ge
@@ -1,9 +1,11 @@
 # public-inbox data flow
 #
 # Note: choose either "delivery tools" OR "git mirroring tools"
-# for a given inboxdir.  Combining them for the SAME inboxdir
-# will cause conflicts.  Of course, different inboxdirs may
-# choose different means of getting mail into them.
+# for a given inboxdir.  Using them simultaneously for the
+# SAME inboxdir will cause conflicts.  Of course, different
+# inboxdirs may choose different means of getting mail into them.
+# You may fork any inbox by starting with "git mirroring tools",
+# and switching to "delivery tools".
 
 graph { flow: down }
 
@@ -13,6 +15,8 @@ graph { flow: down }
  public-inbox-learn] -> [inboxdir]
 
 [git mirroring tools:\n
+ public-inbox-clone,\n
+ public-inbox-fetch,\n
  grok-pull,\n
  various scripts
 ] -- git (clone|fetch) &&\n
@@ -20,9 +24,10 @@ graph { flow: down }
 
 [inboxdir] ->
 [read-only daemons:\n
+ public-inbox-netd\n
  public-inbox-httpd\n
  public-inbox-imapd\n
  public-inbox-nntpd]
 
-# Copyright 2020-2021 all contributors <meta@public-inbox.org>
+# Copyright all contributors <meta@public-inbox.org>
 # License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
diff --git a/Documentation/flow.txt b/Documentation/flow.txt
index 1116a917..ed2dd80b 100644
--- a/Documentation/flow.txt
+++ b/Documentation/flow.txt
@@ -1,9 +1,11 @@
 # public-inbox data flow
 #
 # Note: choose either "delivery tools" OR "git mirroring tools"
-# for a given inboxdir.  Combining them for the SAME inboxdir
-# will cause conflicts.  Of course, different inboxdirs may
-# choose different means of getting mail into them.
+# for a given inboxdir.  Using them simultaneously for the
+# SAME inboxdir will cause conflicts.  Of course, different
+# inboxdirs may choose different means of getting mail into them.
+# You may fork any inbox by starting with "git mirroring tools",
+# and switching to "delivery tools".
 
                                                  +--------------------+
                                                  |  delivery tools:   |
@@ -15,8 +17,10 @@
                                                    |
                                                    v
 +----------------------+                         +--------------------+
-| git mirroring tools: |  git (clone|fetch) &&   |                    |
-|      grok-pull,      |  public-inbox-index     |      inboxdir      |
+| git mirroring tools: |                         |                    |
+| public-inbox-clone,  |                         |                    |
+| public-inbox-fetch,  |  git (clone|fetch) &&   |      inboxdir      |
+|      grok-pull,      |  public-inbox-index     |                    |
 |   various scripts    | ----------------------> |                    |
 +----------------------+                         +--------------------+
                                                    |
@@ -24,10 +28,12 @@
                                                    v
                                                  +--------------------+
                                                  | read-only daemons: |
+                                                 | public-inbox-netd  |
                                                  | public-inbox-httpd |
                                                  | public-inbox-imapd |
                                                  | public-inbox-nntpd |
                                                  +--------------------+
 
-# Copyright 2020-2021 all contributors <meta@public-inbox.org>
+# Copyright all contributors <meta@public-inbox.org>
 # License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
+# This file was generated from flow.txt using Graph::Easy
diff --git a/Documentation/include.mk b/Documentation/include.mk
index bfbc495f..4395e4f4 100644
--- a/Documentation/include.mk
+++ b/Documentation/include.mk
@@ -1,4 +1,4 @@
-# Copyright (C) 2013-2021 all contributors <meta@public-inbox.org>
+# Copyright (C) all contributors <meta@public-inbox.org>
 # License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
 all::
 
@@ -67,13 +67,16 @@ Documentation/standards.txt : Documentation/standards.perl
 
 # flow.txt is checked into git since Graph::Easy isn't in many distros
 Documentation/flow.txt : Documentation/flow.ge
-	(sed -ne '1,/^$$/p' <Documentation/flow.ge; \
-		$(GRAPH_EASY) Documentation/flow.ge || \
-			cat Documentation/flow.txt; \
+
+%.txt : %.ge
+	(sed -ne '1,/^$$/p' <$<; \
+		$(GRAPH_EASY) $< || grep -v '^#' $@; \
 		echo; \
-		sed -ne '/^# Copyright/,$$p' <Documentation/flow.ge \
+		sed -ne '/^# Copyright/,$$p' <$< \
 		) >$@+
-	touch -r Documentation/flow.ge $@+
+	echo >>$@+ \
+	  '# This file was generated from $(@F) using Graph::Easy'
+	touch -r $< $@+
 	mv $@+ $@
 
 Documentation/lei-q.pod : lib/PublicInbox/Search.pm Documentation/common.perl