git-debrebase: Improve/fix handling of $prose

[dgit.git] / git-debrebase.1.pod

diff --git a/git-debrebase.1.pod b/git-debrebase.1.pod
index 40c8081485efddce3f71029c68d6f1075dd3e8f5..ae095c8c194097e794ebd0b441ac6857a9d84df9 100644 (file)
--- a/git-debrebase.1.pod
+++ b/git-debrebase.1.pod
@@ -17,12 +17,11 @@ This is the command line reference.
 Please read the tutorial
 L<dgit-maint-debrebase(5)>.
 For background, theory of operation,
 Please read the tutorial
 L<dgit-maint-debrebase(5)>.
 For background, theory of operation,

-and definitions of the terms used here,
-see L<git-debrebase(5)>.
+and definitions see L<git-debrebase(5)>.

 
 

-If no operation is specified,
-git-debrebase launders the branch and rebases the Debian delta queue.
-See below.
+You should read this manpage in conjunction with
+L<git-debrebase(5)/TERMINOLOGY>,
+which defines many important terms used here.

 
 =head1 PRINCIPAL OPERATIONS
 
 
 =head1 PRINCIPAL OPERATIONS
 


@@ -56,16 +55,19 @@ consuming ffq-prev.
 
 If there is no ffq-prev, it is an error, unless --noop-ok.
 
 
 If there is no ffq-prev, it is an error, unless --noop-ok.
 

+It is a snag (see B<-f>) if the branch is not laundered.
+

 =item git-debrebase new-upstream-v0 <new-version> [<upstream-details>...]
 
 Rebases the delta queue
 onto a new upstream version.  In detail:
 
 Firstly, checks that the proposed rebase seems to make sense:
 =item git-debrebase new-upstream-v0 <new-version> [<upstream-details>...]
 
 Rebases the delta queue
 onto a new upstream version.  In detail:
 
 Firstly, checks that the proposed rebase seems to make sense:

-It is a problem unless the new upstream(s)
+It is a snag unless the new upstream(s)

 are fast forward from the previous upstream(s)
 as found in the current breakwater anchor.
 are fast forward from the previous upstream(s)
 as found in the current breakwater anchor.

-And, in the case of a multi-piece upstream,
+And, in the case of a multi-piece upstream
+(a multi-component upstream, in dpkg-source terminology),

 if the pieces are not in the same order, with the same names.
 
 If all seems well, unstitches and launders the branch.
 if the pieces are not in the same order, with the same names.
 
 If all seems well, unstitches and launders the branch.


@@ -88,26 +90,25 @@ just like a normal git-rebase.
 
 If you git-rebase --abort,
 the whole new upstream operation is aborted,
 
 If you git-rebase --abort,
 the whole new upstream operation is aborted,

-but the laundering will still have been done.
+except for the laundering.

 
 The <upstream-details> are, optionally, in order:
 
 =over
 
 
 The <upstream-details> are, optionally, in order:
 
 =over
 

-=item <upstream-commitish>
+=item <upstream-commit-ish>

 
 

-The new upstream branch (or commitish).
+The new upstream branch (or commit-ish).

 Default is C<upstream>.
 
 Default is C<upstream>.
 

-It is a problem if the upstream contains a debian/ directory;
+It is a snag if the upstream contains a debian/ directory;

 if forced to proceed,
 git-debrebase will disregard the upstream's debian/ and
 take (only) the packaging from the current breakwater.
 
 if forced to proceed,
 git-debrebase will disregard the upstream's debian/ and
 take (only) the packaging from the current breakwater.
 

-=item <piece-name> <piece-upstream-commitish>
+=item <piece-name> <piece-upstream-commit-ish>

 
 Specifies that this is a multi-piece upstream.
 
 Specifies that this is a multi-piece upstream.

-(A multi-component upstream, in dpkg-source terminology.)

 May be repeated.
 
 When such a pair is specified,
 May be repeated.
 
 When such a pair is specified,


@@ -116,7 +117,7 @@ together,
 and then use the result as the combined new upstream.
 
 For each <piece-name>,
 and then use the result as the combined new upstream.
 
 For each <piece-name>,

-the tree of the <piece-upstream-commitish>
+the tree of the <piece-upstream-commit-ish>

 becomes the subdirectory <piece-name>
 in the combined new upstream
 (supplanting any subdirectory that might be there in
 becomes the subdirectory <piece-name>
 in the combined new upstream
 (supplanting any subdirectory that might be there in


@@ -148,14 +149,16 @@ which must be identical to the rev-spec(s)
 passed to git-debrebase.
 git-debrebase does not concern itself with source packages
 so neither helps with this, nor checks it.
 passed to git-debrebase.
 git-debrebase does not concern itself with source packages
 so neither helps with this, nor checks it.

-L<git-archive(1)>, L<dgit(1)> and L<gbp(1)> may be able to help.
+L<git-deborig(1)>,
+L<git-archive(1)>, L<dgit(1)> and
+L<gbp-import-orig(1)> may be able to help.

 
 This subcommand has -v0 in its name because we are not yet sure
 that its command line syntax is optimal.
 We may want to introduce an incompatible replacement syntax
 under the name C<new-upstream>.
 
 
 This subcommand has -v0 in its name because we are not yet sure
 that its command line syntax is optimal.
 We may want to introduce an incompatible replacement syntax
 under the name C<new-upstream>.
 

-=item git-debrebase convert-from-gbp [<upstream-commitish>]
+=item git-debrebase convert-from-gbp [<upstream-commit-ish>]

 
 Cnnverts a gbp patches-unapplied branch
 (not a gbp pq patch queue branch)
 
 Cnnverts a gbp patches-unapplied branch
 (not a gbp pq patch queue branch)


@@ -165,13 +168,13 @@ This is done by generating a new anchor merge,
 converting the quilt patches as a delta queue,
 and dropping the patches from the tree.
 
 converting the quilt patches as a delta queue,
 and dropping the patches from the tree.
 

-The upstream commitish should correspond to
-the gbp upstream branch.
-It is a problem if it is not an ancestor of HEAD,
+The upstream commit-ish should correspond to
+the gbp upstream branch, if there is one.
+It is a snag if it is not an ancestor of HEAD,

 or if the history between the upstream and HEAD
 contains commits which make changes to upstream files.
 
 or if the history between the upstream and HEAD
 contains commits which make changes to upstream files.
 

-It is also a problem if the specified upstream
+It is also a snag if the specified upstream

 has a debian/ subdirectory.
 This check exists to detect certain likely user errors,
 but if this situation is true and expected,
 has a debian/ subdirectory.
 This check exists to detect certain likely user errors,
 but if this situation is true and expected,


@@ -196,7 +199,123 @@ a dropped patch queue!
 =item git-debrebase breakwater
 
 Prints the breakwater tip commitid.
 =item git-debrebase breakwater
 
 Prints the breakwater tip commitid.

-Fails if your HEAD branch is not laundered.
+If your HEAD branch is not fully laundered,
+prints the tip of the so-far-laundered breakwater.
+
+=item git-debrebase anchor
+
+Prints the breakwater anchor commitid.
+
+=item git-debrebase analyse
+
+Walks the history of the current branch,
+most recent commit first,
+back until the most recent anchor,
+printing the commit object id,
+and commit type and info
+(ie the semantics in the git-debrebase model)
+for each commit.
+
+=item git-debrebase record-ffq-prev
+
+Establishes the current branch's ffq-prev,
+as discussed in L</UNSTITCHING AND LAUNDERING>,
+but does not launder the branch or move HEAD.
+
+It is an error if the ffq-prev could not be recorded.
+It is also an error if an ffq-prev has already been recorded,
+unless --noop-ok.
+
+=item git-debrebase launder-v0
+
+Launders the branch without recording anything in ffq-prev.
+Then prints some information about the current branch.
+Do not use this operation;
+it will be withdrawn soon.
+
+=item git-debrebase convert-to-gbp
+
+Converts a laundered branch into a
+gbp patches-unapplied branch containing quilt patches.
+The result is not fast forward from the interchange branch,
+and any ffq-prev is deleted.
+
+This is provided mostly for the test suite
+and for unusual situations.
+It should only be used with a care and 
+with a proper understanding of the underlying theory.
+
+Be sure to not accidentally treat the result as
+a git-debrebase branch,
+or you will drop all the patches!
+
+=back
+
+=head1 OPTIONS
+
+This section documents the general options
+to git-debrebase
+(ie, the ones which immediately follow
+git-debrebase
+or
+git debrebase
+on the command line).
+Individual operations may have their own options which are
+docuented under each operation.
+
+=over
+
+=item -f<snag-id>
+
+Turns snag(s) with id <snag-id> into warnings.
+
+Some troublesome things which git-debrebase encounters
+are B<snag>s.
+(The specific instances are discussed
+in the text for the relvant operation.)
+
+When a snag is detected,
+a message is printed to stderr containing the snag id
+(in the form C<-f<snag-idE<gt>>),
+along with some prose.
+
+If snags are detected, git-debrebase does not continue,
+unless the relevant -f<snag-id> is specified,
+or --force is specified.
+
+=item --force
+
+Turns all snags into warnings.
+See the -f<snag-id> option.
+
+Do not invoke git-debrebase --force in scripts and aliases;
+instead, specify the particular -f<snag-id> for expected snags.
+
+=item --noop-ok
+
+Suppresses the error in
+some situations where git-debrebase does nothing,
+because there is nothing to do.
+
+The specific instances are discussed
+in the text for the relvant operation.
+
+=item --anchor=<commit-ish>
+
+Treats <commit-ish> as an anchor.
+This overrides the usual logic which automatically classifies
+commits as anchors, pseudomerges, delta queue commits, etc.
+
+It also disables some coherency checks
+which depend on metadata extracted from its commit message,
+so
+it is a snag if <commit-ish> is the anchor
+for the previous upstream version in
+git-debrebase new-upstream operations.
+
+=item -D
+
+Requests (more) debugging.  May be repeated.

 
 =back
 
 
 =back
 


@@ -207,30 +326,49 @@ In detail this means:
 
 =head2 Establish the current branch's ffq-prev
 
 
 =head2 Establish the current branch's ffq-prev
 

-If it is not yet recorded,
+If ffq-prev is not yet recorded,

 git-debrebase checks that the current branch is ahead of relevant
 remote tracking branches.
 git-debrebase checks that the current branch is ahead of relevant
 remote tracking branches.

+The relevant branches depend on
+the current branch (and its
+git configuration)
+and are as follows:

 
 

-The remote tracking branches checked by default are
-obtained from the git config.
-In each case it is a problem if
-the local HEAD is behind the checked remote,
-or if local HEAD has diverged from it.
-All the checks are done locally using the remote tracking refs:
-git-debrebase does not fetch anything from anywhere.
+=over
+
+=item

 
 

-git-debrebase checks the branch that git would merge from
-(remote.<branch>.merge, remote.<branch>.remote)
-and the branch git would push to
-(remote.<branch>.pushRemote etc.).
-For local dgit suite branches
-it checks the corresponding tracking remote.
-If you are on C<master>, it checks remotes/dgit/dgit/sid.
-The resulting ref names to check are filtered through
+The branch that git would merge from
+(remote.<branch>.merge, remote.<branch>.remote);
+
+=item
+
+The branch git would push to, if different
+(remote.<branch>.pushRemote etc.);
+
+=item
+
+For local dgit suite branches,
+the corresponding tracking remote;
+
+=item
+
+If you are on C<master>,
+remotes/dgit/dgit/sid.
+
+=back
+
+The apparently relevant ref names to check are filtered through

 branch.<branch>.ffq-ffrefs,
 which is a semicolon-separated list of glob patterns,
 each optionally preceded by !; first match wins.
 
 branch.<branch>.ffq-ffrefs,
 which is a semicolon-separated list of glob patterns,
 each optionally preceded by !; first match wins.
 

+In each case it is a snag if
+the local HEAD is behind the checked remote,
+or if local HEAD has diverged from it.
+All the checks are done locally using the remote tracking refs:
+git-debrebase does not fetch anything from anywhere.
+

 If these checks pass,
 or are forced,
 git-debrebse then records the current tip as ffq-prev.
 If these checks pass,
 or are forced,
 git-debrebse then records the current tip as ffq-prev.


@@ -257,4 +395,5 @@ The result is the laundered branch.
 
 git-debrebase(1),
 dgit-maint-rebase(7),
 
 git-debrebase(1),
 dgit-maint-rebase(7),

-dgit(1)
+dgit(1),
+gitglossary(7)