wroclaw-git-backups/nix
1
0
Fork 0
mirror of https://github.com/NixOS/nix synced 2025-06-28 13:41:15 +02:00
Code Activity

Improve the error message for “multicommands” commands (#9510)

Browse source 
* Factor out the default `MultiCommand` behavior

All the `MultiCommand`s had (nearly) the same behavior when called
without a subcommand.
Factor out this behavior into the `NixMultiCommand` class.

* Display the list of available subcommands when none is specified

Whenever a user runs a command that excepts a subcommand, add the list
of available subcommands to the error message.

* Print the multi-command lists as Markdown lists

This takes more screen real estate, but is also much more readable than
a comma-separated list
This commit is contained in:
Théophane Hufschmitt 2023-12-06 14:13:45 +01:00 • committed by GitHub
parent fbc855b3c3
commit 7fff625e39
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
15 changed files with 55 additions and 89 deletions
Download patch file Download diff file Expand all files Collapse all files

5
src/libutil/args.cc
View file

@ -483,7 +483,7 @@ bool Args::processArgs(const Strings & args, bool finish)
if (!anyCompleted)
exp.handler.fun(ss);
/* Move the list element to the processedArgs. This is almost the same as
/* Move the list element to the processedArgs. This is almost the same as
`processedArgs.push_back(expectedArgs.front()); expectedArgs.pop_front()`,
except that it will only adjust the next and prev pointers of the list
elements, meaning the actual contents don't move in memory. This is
@ -622,8 +622,9 @@ std::optional<ExperimentalFeature> Command::experimentalFeature ()
return { Xp::NixCommand };
}
MultiCommand::MultiCommand(const Commands & commands_)
MultiCommand::MultiCommand(std::string_view commandName, const Commands & commands_)
: commands(commands_)
, commandName(commandName)
{
expectArgs({
.label = "subcommand",