The `help` module is no longer needed, since `clap` handles that.
This meant that the re-exports of each command's `ABOUT` could be removed and
the `const`s can now be private.
Now that all commands can be parsed by clap, remove any custom parsing and
directly use `CliArgs::parse`.
The `Diff` command was removed, since only one `external_command` can be
declared for a subcommand. The handling of `rad diff` is now done via the
`External` variant. If the subcommand name is `diff` then this is executed,
otherwise delegate to the possible `rad-{exe}` command.
Also of note, the `rad inspect` command has an alias `rad .`. This changes the
behaviour of `rad . --help`. Before, it would print the help of the `rad`
command. Now, it prints the help of `rad inspect`.
Co-authored-by: Lorenz Leutgeb <lorenz.leutgeb@radicle.xyz>
Due to the idiosyncracies of this command there are a few things to note about
this migration.
The `rad sync` command acts as a default subcommand in itself, in that it has
options that do not apply to its subcommand, `rad sync status`. This means that
the options will print with `rad sync --help`, but they will not print with `rad
sync status`.
The `--inventory` flag is not compatible with any of the other flags and
options, thus they are all marked with `conflicts_with`. This cannot be done for
a positional argument, so `clap` will "helpfully" print out the usage, for
example, as:
error: the argument '--inventory' cannot be used with '--fetch'
Usage: rad sync --inventory [RID]
For more information, try '--help'.
Which is incorrect, since `RID` is ignored. This is explained in the `--help`
documentation for `--inventory`.
Co-authored-by: Lorenz Leutgeb <lorenz.leutgeb@radicle.xyz>
Moving the sub-comment actions to be beside the top level comment action. This
is mostly to provide a better diff for the next commit – that refactors due to
`clap` changes.
We decided to use the value names to indicate which type the value
is parsed into (instead of just saying that the value is a `STRING`).
This makes the value names consistent with other commands again.
This implementation works around the fact that `clap` does currently
not support value parsers for a series of values, so representing
`--payload` as a `Vec<Payload>` does not work.
Instead, we parse eveything into a `Vec<String>` and do the validation
on the application side.
Using value parsers for a series of values will probably be supported in
`clap` v5, though.
Make `git2` an *optional* dependency of `radicle-cob`, and refactor
`radicle` to depend on crates that in turn do not depend on `git2`
*non-optionally*
The main offending dependency of `radicle-cob` is `radicle-git-ext`
from the `radicle-git` workspace in repository
(rad:z6cFWeWpnZNHh9rUW8phgA3b5yGt) which *non-optionally* depends on
`git2`.
So, to achieve removal of this dependency:
1. The crate is refactored to depend on the new crates
`radicle-git-ref-format` `radicle-git-metadata`, and
`radicle-oid` introduced in the previous commits, instead of
`radicle-git-ext`.
2. Some code from the `radicle-git-ext` crate in the `radicle-git`
workspace in repository (rad:z6cFWeWpnZNHh9rUW8phgA3b5yGt) is
copied. See `crates/radicle-cob/src/backend/git/commit.rs`.
This cascades to `radicle` and its dependents.
Firstly, the there is an
`impl Deref<Target=git2::Oid> for radicle_git_ext::Oid`. This made
it very convenient to just deref to obtain the wrapped `git2::Oid`,
so there are many expressions of the shape `*oid` in `radicle` and
its dependents. However `radicle-oid` does not provide
`impl Deref<Target=git2::Oid> for radicle_oid::Oid`, as notably,
`Target` is an associated type, and not a type parameter, so an
implementation of `Deref` would tie the new `Oid` too tightly to a
particular implementation.
Instead, work with `impl From<radicle_oid::Oid> for git2::Oid`
(which can be enabled using the feature flag `radicle-oid/git2`).
This explains the changes from `*oid` to `oid.into()` at every
transition to "`git2` land".
Secondly, `radicle` and its dependents are refactored to also depend
on `radicle-git-ref-format` and (much less prominently)
`radicle-git-metadata` instead of `radicle-git-ext`
This is to avoid pulling in `git2` via these dependencies.
Thirdly, as the re-exports in `crates/radicle/src/git.rs` change,
they are at the same time also cleaned up. Notably, the types from
`radicle-git-ref-format` are re-exported under `fmt` only, not "twice".
While overall this obviously is very much a breaking change, these
changes should mostly amount to changing from `Deref` to `Into`, i.e.,
`*oid` → `oid.into()` and rewriting imports for `radicle::fmt`.
This is indicated by the mostly mechanical nature of the changes to
`crates/radicle-{cli,node,remote-helper}`.
macOS's `sed` requires an argument for `-i`, which we don't provide
in the example. Providing it makes the test fail on Linux.
Since this command is deprecated anyway, we just skip macOS.
It looks like macOS does not like this command:
ln: -f: No such file or directory
Since `LICENSE` and `MIT` are both just empty here, we don't need to
link anything.
This is a small cleanup to path generation during testing.
1. Separate `rad_home` and `unix_home` to avoid confusion.
2. Remove now unnecessary `trait HasHome`.
3. Move setting `$USER` to the environment.
4. Make paths shorter overall, to fix macOS tests.
This adds `conflicts_with` for `private` and `public` to simplify the logic that checks for the document visibility
(thank you Fintan)
Co-authored-by: Fintan Halpenny <fintan.halpenny@gmail.com>
The "seeds" command does only take a repository ID, and
carries the implicit assumption that the namespace with the same public
key as the Node ID of the receiving `radicle-node` process should be
used as reference for determining whether other nodes are in sync,
but no other namespace.
In the spirit of separating user and node identity, relax this, so that
the command also carries the public keys relative to which the sync
status should be computed. This allows to inspect sync status for
arbitrary namespaces via command.
For now, this feature is not exposed to the CLI, but `rad sync status`
always passes the public key of the active profile.
The "announce references" command does only take a repository ID, and
carries the implicit assumption that the namespace with the same public
key as the Node ID of the receiving `radicle-node` process should be
announced, but no other namespace.
In the spirit of separating user and node identity, relax this, so that
the command also carries the public keys for which the announcement
should be made. This allows to announce arbitrary namespaces out of
storage via command.
For now, this feature is not exposed to the CLI, but rather:
- `rad sync` always announce for the public key of the active profile.
- `git-remote-rad` ditto, as it calls the same codepath.
On Windows, all attempts to clone repositories failed with
Fetch failed for rad:… from z6Mk…: Access is denied. (os error 5)
The reason is that, other than Unix-like systems, it forbids that
directories that are in use are moved.
To improve the situation, take back control over what is moved and
removed exactly by implementing `cleanup` instead of relying
on `impl Drop for tempfile::TempDir`.
A new type `TempRepository` is introduced to capture a repository that can be
used temporarily, and either cleaned up on failure, or moved on success.
This `TempRepository` can be constructed using `Storage::temporary_repository` –
renamed from `Storage::lock_repository` since it is only creating a temporary
resource and not locking it.
In the future (once Rust 1.89 is a little less cutting edge and more
widely available), we may opt for actual locking via
`std::fs::File::lock`.
A rewrite of the argument parsing portions of the `rad issue` subcommand
using `clap` instead of `lexopt`.
From a user's perspective, the look-and-feel of `rad issue` does not
change much. Although, the most prominent change is to rely on
`clap`'a default error template which looks a bit different from what we
use usually (`error: ...` vs. `✗ Error: ...`).
Leaving the above restriction aside, subcommand mis-usage is
reported more verbosely.
Also configure `clap` to use colored output for errors and help pages.
In help output, headers are colored with `Magenta` to match the overall
CLI styling.
Specify a type that captures the different actions that can be take
when using the `comment` command: `Comment`, `Reply`, and `Edit`.
Move the functions that run the corresponding actions into a `comment`
module.
To preserve the "default command" behaviour being `rad issue list`,
e.g., `rad issue --solved` behaving like `rad issue list --solved`,
introduce a new type `EmptyArgs`to also parse arguments without a
subcommand. In case no subcommand was parsed, construct `Command::List`
with from `EmptyArgs`.
Co-authored-by: Matthias Beyer <mail@beyermatthias.de>
Co-authored-by: Lorenz Leutgeb <lorenz.leutgeb@radicle.xyz>
Co-authored-by: Erik Kundt <erik@zirkular.io>
Co-authored-by: Fintan Halpenny <fintan.halpenny@gmail.com>
The implementation of `Keystore` requires a particular layout and naming
of keys. This is a rather strong limitation. Lift it and allow
specifying an arbitrary path for the secret and public key.
As it is possible to derive the public key from the secret key, make
the public key in `Keystore` optional. Also allow constructing
`MemorySigner` can now be initialized without a public key, by
deriving it.
When using Jujutsu and a non-colocated Git repository, the detection
using `git2` directly fails (just as `git` in a shell would fail)
because there is no `.git` directory found by traversing up the
filesystem hierarchy.
Add an invocation of `jj git root` as a fallback.
When run with a secret and public key that do not cryptographically
match, `fn radicle_cli::terminal::io::signer` would prompt the user
for a password to unlock the secret key, and then carry on with a
mismatching key pair.
Fix this by verifying that the keys match in `MemorySigner::load`
and only swallow errors initializing the signer in cases where
prompting for a password makes sense. It does not make sense in the
case of mismatched keys.
This removes the `rad issue` test examples from being used in the
`fn rad_patch` test example execution. Removing it here is fine, since
it is being executed on its own anyways.
The output of this command is confusing. It is not clear which of the
hashes printed is that of the revision and which one is the respective
head commit.
Further, the hash is omitted on the initial revision, adding confusion.
Further, the terminology of "revised" vs. "updated" is confusing.
This rewrites `timeline.rs` to drop the distinction between various
revisions (in wording, the small icon is still different) and cleans up
the output.
Attention is paid to alignment of the output. Now all verbs of updates
("accepted", "rejected", "reviewed", "merged") are aligned, and authors
("… by …") are also aligned.
The rewrite itself is not for better code quality or readability.
Note that all the code in this file only accessed via one `fn` by one
callsite in the implementation of `rad patch`.
The `--setup-signing` flag is a no-op when combined with `--existing`
and errors on bare repositories.
Make it effective in combination with `--existing` and also rewrite it
to support bare repositories, gracefully falling back to just avoid
writing to `.gitsigners`.
`radicle::run` interprets the `Output` returned by the `git`
process. However, depending on the application we have different
requirements for interpreting the output, e.g., how to handle errors.
Make `radicle::run` not interpret `Output`, but move this
logic to the respective binary crates (`radicle-remote-helper` and
`radicle-cli`).
The `verbosity` option is ignored, which makes it more difficult to
obtain debugging information if the "internal" push, i.e., the
`git push` invocation by `git-remote-rad` fails.
Provide two types for verbosity, and wire them up.
Rewrite module declarations that use the `#[path="…"]` annotation
to the more idomatic `pub mod …` + `pub use …` forms.
For the "self" module, that is not possible because `self` is an
identifier in Rust, and also `r#self` is not admissable as a raw
identifier, so stick to `rad_self`.
Files in submodules were patched as appropriate.
To get to a point of separating the users' identity from the node, then the `rad
self` command should not display information related to the node so prominently.
The relation between `rad` and `radicle-node` is really similar to that between
`rad` and SSH Agent. They communicate via socket. So, when this connection is
successful, it is printed, but not more.
There may be some re-learning for users here, but it is worth the improvement.
Note that the information being removed here is available via `rad node status`
(see previous commit).
If we ever want to disentangle the users' identity from the node, then
the `rad node` commands must learn to print the information related to
the node, so here we go.
As a library crate, it is bad to return such generic errors.
To get there, errors from `inquire` are downcasted.
This allowed to clean up the public interface of `radicle-term`, so that
it does also not leak the `inquire::InquireError` in its public API.
This change was inspired by the a story as old as time:
𝕃𝕖𝕥 𝕦𝕤 𝕞𝕚𝕩 𝕠𝕦𝕣 𝕓𝕦𝕤𝕚𝕟𝕖𝕤𝕤 𝕝𝕠𝕘𝕚𝕔 𝕨𝕚𝕥𝕙 𝕠𝕦𝕣 𝕀𝕆!
It was motivated by the fact that the canonical quorum logic was spread across
two modules and also two different repositories (in the API sense). The
`radicle-remote-helper` contained special logic for computing the quorum, and
also relied on the logic with `radicle` itself. It would also mix using the
Radicle storage repository and the working copy repository – resulting in issues
where objects could exist in one and not the other.
The change begins by separating away the IO away from any of the business logic
in the `git::canonical` module. To follow along, there are two important submodules:
1. `voting` captures the different type of voting processes for commits and tags
a. Tags are simple, where one `Oid` means one vote
b. Commits are slightly more complicated. They begin with one `Oid` means one
vote, but then it is expected that merge bases are calculated for pairs of
commits. These merge bases are used to increase a vote for an `Oid` if it
is the merge base of another commit.
2. `quorum` builds on top of `voting` and uses the voting processes as well as
the `threshold` to find the quorum for the tag or commit reference.
a. For tags, the first past the threshold wins, but if multiple pass then it
is an error.
b. For commits, the merge base process should be used to increase the votes,
until the caller is ready to find the quorum. At this point, the commits
that pass the `threshold` are then compared to find the commit that is the
child-most commit of all other candidates. If they diverge, then an error
is returned.
There is also a `convergence` module that captures the logic that is required
for the `radicle-remote-helper`. It essentially checks if a candidate object
matches the expected objects, tags or commits, and performs the necessary
convergence logic – checking that the candidate commit is converging with
at least of the other `Did`s.
These two quorum processes, and the convergence process, essentially act as
state machines and can be driven by the use of a Git repository for finding the
merge bases. This is where the `effects` module comes in. The `effects` capture
the necessary traits that are required to drive the state machines of the quorum
processes. It is expected that a Git repository implements these, and in fact, a
`git2::Repository` implementation is provided. The traits are useful, since it
means that a `git2::Repository` can be swapped out and the logic would stay the
same.
This all culminates into the new and improved `Canonical` and
`CanonicalWithConvergence`. Both of which have methods `find_quorum` for
performing the quorum process using a *single* provided repository.
This resulted in the semantic change of requiring that the
`radicle-remote-helper` pushes the candidate commit, irregardless of whether it
will be a fast-forward. For now, this is something that will be accepted while
the UX can be improved in the future by providing detailed warnings of the
divergence and ways to fix it. The benefit is that the tooling will never stop
someone from diverging if that is in fact what they want to do.
I was greeted by `rad patch redact` with
called `Result::unwrap()` on an `Err` value:
Error { code: None, message: Some("failed to convert") }
stack backtrace:
[…]
3: core::result::Result<T,E>::unwrap
at …/rust-1.88.0/lib/rustlib/src/rust/library/core/src/result.rs:1137:23
4: sqlite::cursor::Row::read
at …/index.crates.io-1949cf8c6b5b557f/sqlite-0.32.0/src/cursor.rs:136:9
5: radicle::cob::patch::cache::query::find_by_revision
at ./crates/radicle/src/cob/patch/cache.rs:624:65
6: <… as radicle::cob::patch::cache::Patches>::find_by_revision
at ./crates/radicle/src/cob/patch/cache.rs:553:9
7: radicle_cli::commands::rad_patch::redact::run
at ./crates/radicle-cli/src/commands/patch/redact.rs:23:9
8: radicle_cli::commands::rad_patch::run
at ./crates/radicle-cli/src/commands/patch.rs:1026:13
[…]
It turns out that `sqlite::cursor::Row::read` is the panicky version of
`sqlite::cursor::Row::try_read` (which returns a `Result`).
While it is somewhat rare that SQLite reads fail, it is not unheard of.
In `radicle-cli` it might not be critical, but also `radicle-protocol`
and `radicle-fetch` are affected, and they could potentially panic a
`radicle-node` process.
Use `try_read` instead, and propagate down the error handling.
Microsoft Windows has Universal Naming Convention (UNC) paths, see
<https://learn.microsoft.com/en-us/dotnet/standard/io/file-path-formats#unc-paths>
The Rust standard library normalizes paths to this form when calling
`std::fs::canonicalize`, see
<https://doc.rust-lang.org/std/fs/fn.canonicalize.html>
However, some programs, do not parse these paths correctly, including
our ally `git`:
$ git clone \\?\C:\Users\lorenz\tmp
Cloning into 'tmp'...
ssh: Could not resolve hostname \\\\?\\c: No such host is known.
fatal: Could not read from remote repository.
Please make sure you have the correct access rights
and the repository exists.
The `dunce` crate solves the problem of having to deal with
normalization and avoiding weird UNC paths for us. Note that on
non-Windows platforms, it *behaves exactly like*
`std::fs::canonicalize`!
The `fn io_other` disguises all sorts of errors as I/O errors, making
errors in the transport component of `radicle-fetch` harder to
understand.
Instead, expose a new error type that allows to discriminate.
This patch adds the `cob::common::Title` struct, this allows instead of
using `std::str::String` or generics and traits for it, to define more
precisely what a title should be.
It trims the provided string and makes sure it contains no carriage
return or new line characters.
Where a `std::str::String` makes more sense so it's easier to mutate it,
we keep the code as is.
Co-authored-by: Fintan Halpenny <fintan.halpenny@gmail.com>
This patch clearifies (in the help message of the command) how the
"clear" subcommand behaves when passing ids.
Signed-off-by: Matthias Beyer <mail@beyermatthias.de>
This patch optimizes how the issues are collected.
Before, the issues where pushed to a new instance of `Vec`, which was
not preallocated to the size of the iterator.
This could be slow when a large number of issues is returned by the
iterator.
With the `Iterator::collect` function, the `FromIterator` implementation
of `Vec` is used, which makes use of `Iterator::size_hint` for
optimizing how much space is preallocated when collecting into the
`Vec`.
Signed-off-by: Matthias Beyer <mail@beyermatthias.de>
Symbols signaling status of a process and similar are duplicated in
three different crates. Also two different symbols to signal success are
used:
1. ✓ ( Check Mark, U+2713)
2. ✔ (Heavy Check Mark, U+2714)
Work against that by referring to `radicle-term` from the other crates.
The `Announcer` logic was subtly different to the fetching logic, where the
preferred seeds need to be announced to *and* the replication factor had to be
reached.
This patch relaxes that constraint, and allows it to hit either targets before
exiting.
This also surfaced an issue with the with the `Progress` calculation, where
calculating the `unsynced` used the `synced` value to subtract. However, this
was not required because `to_sync` is mutated, so the value is simply
`to_sync.len()`. A test case was added to ensure this is correct by checking
that invariant that the total between synced and unsynced nodes always matches
the total of synced and unsynced progress.
This is morally a revert of 70fb0d3fef
while additionally getting to compile
`crates/radicle-term/src/editor.rs` on Windows.
To get the changes that were made on top of the revert, check
git diff 70fb0d3fef~1 <this commit> -- crates/radicle-term/src/editor.rs
There were reports of the inquire editor being unrealiable.
Only the latest log was kept as `node.log.old`. Now, log files are
numbered (`node.log.1`, `node.log.2` and so on). Also `node.log` is now
a hard link to the current log file. `rad node stop` will delete
`node.log` (note that `node.log.x` stays intact) and `rad node start`
will delete `node.log` before it creates `node.log.y` in case the node
crashed.
Also, when running in foreground mode, now a log file is created. It
just contains the hint that the node was started in foreground mode,
just to avoid confusion.
The implementation is split into a sans I/O part as `struct LogRotator`,
while the I/O counterpart is captured by `struct LogRotatorFileSystem`.
The logic for computing canonical references conflated the semantics of
annotated and lighweight tags, yielding confusing/wrong results. The
main culprit was the call to `peel_to_commit` in
`impl ReadRepository for Repository`, peeling tag objects away.
To resolve this, we separate out quroum computation per object type: one
implementation for commits, and one for tags.
Also move move canonical error types and methods into their own
module to have a cleaner file structure for the main logic.
Capture the `BTreeMap<Oid, u8>` type into a `Votes` struct, with its own API.
We were getting the objects from the repository twice – once in `Canonical::new`
and once again in `ensure_commit_or_tag` – so the latter was removed.
Use an `enum CanonicalObject` to specify which object types the canonical
process supports.
During `converges`, separate commits and tags, and ensure that we are only
looking at objects of one type. Note, that Fintan think this is actually the
*wrong* place to do it because we already filter the objects – so we should
keep track of that information higher up the callstack.
Co-authored-by: Fintan Halpenny <fintan.halpenny@gmail.com>
When we fail to get the info for the binary names of `radicle-node` and
`git-remote-rad`, we still mention the binary name which is usually a part of
their output.
Provide a default message that informs the user of the `(e)`, `(enter)`, and
`(esc)` functionality.
Unfortunately, it is not possible to provide any message that is better
customised to each case, due to `inquire` requiring a `'a` lifetime on all its
inputs – this rules out providing any kind of `String` input.
The first paramter of `Editor::new` can already be used to provide more
contextual information. The second parameter is left configurable, but for now
`Editor::HELP` is used everywhere.
The trait `radicle_ssh::agent::client::ClientStream` trait was
simplified, because `winpipe::WinStream` is so similar to
`std::os::unix::net::UnixStream` that we can just use the same
implementation for both platforms.
However, obtaining the process identifier of the SSH agent process is
not common on Windows, so we instead track the path that we used to
connect to the agent. This is also helpful on Unix. In some cases, the
path will even contain the process identifier. The path is printed by
`rad self`.
Errors are cleaned up, and error messages are improved.
`radicle-term` includes quite a lot of rather "low-level" logic to spawn
the preferred editor of the user. In particular, this logic is
platform-dependent and only works on Unix-like platforms.
Also, `radicle-term` already depends on `inquire` which features an
editor prompt. It is a cross-platform solution to spawn the editor.
This commit changes the implementation of `Editor` to be a wrapper of
`inquire::Editor`, keeping the interface mostly intact.
Downsides:
- We cannot edit a file "in place" this way, instead we have to read
it, as `inquire` only supports editing temporary files. This can also
be viewed as a benefit, as we lessen the risk of corruption of these
files.
- `inquire::Editor` contains borrows, so it is quite cumbersome to
extend it with a custom mechanism for looking up the preferred
editor. The lookup logic was kept, but needs to be invoked by the
caller. In the future we might consider just using the logic provided
by `inquire` or requesting a change to `inquire`.
- The prompt is a bit strange. It does not show the current state of
the output, see <https://github.com/mikaelmello/inquire/issues/280>
and <https://github.com/mikaelmello/inquire/pull/271>.
When using `rad init` the default branch for the project can be predetermined by
inspecting the working copy repository.
To improve the experience, it will first check `init.defaultBranch` in the Git
configuration file.
If it does not find this, it falls back to choosing the default head of the
repository at the time. This may be HEAD, and in this case it will error and
provide helpful information.
The repository may also not have any default head at the time, and this also
results in an error and hint.
This set of changes refactors the canonical handling by isolating the business
logic into another type, `Canonical`.
The functionality remains the same, but certain error scenarios are better
handled. Primarily, the commits of the inner `Canonical` type are checked to see
if they exist in the working copy, and if not, provide a more useful message
about which commit was missing or invalid for which DID.
Pay more attention to when a Node ID is displayed in compact form. As
this was sometimes used to save space, e.g. in `rad node status` in
combination with long node addresses (like .onion names), also implement
a compact format for node addresses and use that instead in some cases.
Progress notifications in spinners keep the short form.
Mostly changes of `use`s and moving components to `radicle-protocol`,
with the goal of just getting `radicle-node` to work on top of the new
`radicle-protocol` crate.
Add a test to exercise adding canonical reference rules and pushing new
canonical tags.
A change in `rad id` was required to allow adding a new payload to the document,
i.e. one that does not already exist.
Adding rules is also documented in the man page for `rad id`.
The business logic of modifying the identity document should not live in the CLI
code for updating said document.
Instead, we extract out that logic into separate update functions and these are
using from the CLI instead.
Prepare the crates for releasing to crates.io:
- radicle-remote-helper: 0.10 -> 0.11
- radicle-term: 0.12 -> 0.13
- radicle-cli: 0.13 -> 0.14
- radicle-node: 0.11 -> 0.12
- radicle-fetch: 0.11 -> 0.12
- radicle: 0.15 -> 0.16
It was also necessary to specify the `version` in the workspace Cargo.toml file,
since this is required for publishing to crates.io.
Allow the `rad node connect` command to use only a `NodeId` when connecting.
The `NodeId` is used to connect to known addresses, and will stop at the first
address that is connected to.
I learned that there is an implementation of a pager in
`crates/radicle-term/src/pager.rs`. It does not make sense to me to
maintain a pager in `heartwood`, this is too far from the core of what
we are trying to achieve and adds unnecessary maintenance burden. We can
allow ourselves to defer to the paging done by `git` or just call the
user's `$PAGER`. Even though falling back to unpaged output might not be
the nicest thing, I still prefer that over maintaining the pager.
It also was frustrating to me that the pager does not support things
like search (like `less` does).
This also significantly decreases our dependence on `termion`.
The pager was originally implemented by cloudhead in
40f4383bbc
and integrated into `rad diff` in
6dd52c94fb
This commit restores the behaviour introduced in
84a95848b0
(before there was a custom pager implementation).
Writing a comment, only the most recent comment replied to is shown.
Editing a comment, current contents are not prepared. Manual copy required.
To improve:
- Chase all replies to the root and quote them. Gracefully handle if
this proces fails, i.e. a comment in the chain cannot be resolved.
- If editing, copy the current contents.