allow cmd sequences in verb execution

The syntax changed. Instead of `execution` (which is still allowed),
`internal`, `external` and `cmd` are now prefered.

The syntax of the `cmd` property is the same than the `--cmd`
launch argument, with the added possibility to have dynamic parts.

Two examples of sequence based verbs:

	[[verbs]]
	name = "myplaces"
	key = "ctrl-g"
	cmd = ":focus ~;:!focus /"

	[[verbs]]
	name = "backup"
	invocation = "bu {name}"
	cmd = ":cp {file}-back_{name};:!focus {file}-back_{name}"
	apply_to = "directory"

Fix #277

1 files changed, 5 insertions, 1 deletions

diff --git a/src/verb/verb_execution.rs b/src/verb/verb_execution.rs
index 3f0cbac..6390598 100644
--- a/src/verb/verb_execution.rs
+++ b/src/verb/verb_execution.rs
@@ -1,4 +1,4 @@
-use super::{ExternalExecution, InternalExecution};
+use super::*;
 
 /// how a verb must be executed
 #[derive(Debug, Clone)]
@@ -10,4 +10,8 @@ pub enum VerbExecution {
     /// the verb execution refers to a command that will be executed by the system,
     /// outside of broot.
     External(ExternalExecution),
+
+    /// the execution is a sequence similar to what can be given
+    /// to broot with --cmd
+    Sequence(SequenceExecution),
 }