Use just --show in default chooser (#1539)

Cargo.toml

@@ -52,6 +52,14 @@ temptree = "0.2.0"
 which = "4.0.0"
 yaml-rust = "0.4.5"
 
+[lib]
+doctest = false
+
+[[bin]]
+path = "src/main.rs"
+name = "just"
+test = false
+
 [features]
 # No features are active by default.
 default = []

man/just.1

@@ -19,7 +19,7 @@ Run `\-\-fmt` in 'check' mode. Exits with 0 if justfile is formatted correctly.
 .TP
 \fB\-\-choose\fR
 Select one or more recipes to run using a binary. If `\-\-chooser` is not passed the
-chooser defaults to the value of $JUST_CHOOSER, falling back to `fzf`
+chooser defaults to the value of $JUST_CHOOSER, falling back to `fzf --preview 'just --show {}'`
 .TP
 \fB\-\-clear\-shell\-args\fR
 Clear shell arguments

src/config.rs

@@ -4,7 +4,7 @@ use {
 };
 
 // These three strings should be kept in sync:
-pub(crate) const CHOOSER_DEFAULT: &str = "fzf";
+pub(crate) const CHOOSER_DEFAULT: &str = "fzf --preview 'just --show {}'";
 pub(crate) const CHOOSER_ENVIRONMENT_KEY: &str = "JUST_CHOOSER";
 pub(crate) const CHOOSE_HELP: &str = "Select one or more recipes to run using a binary. If \
                                       `--chooser` is not passed the chooser defaults to the value \

tests/choose.rs

@@ -151,7 +151,9 @@ fn invoke_error_function() {
           echo bar
       ",
     )
-    .stderr_regex("error: Chooser `/ -cu fzf` invocation failed: .*\n")
+    .stderr_regex(
+      r"error: Chooser `/ -cu fzf --preview 'just --show \{\}'` invocation failed: .*\n",
+    )
     .status(EXIT_FAILURE)
     .shell(false)
     .args(["--shell", "/", "--choose"])
@@ -213,6 +215,7 @@ fn default() {
 
   let output = Command::new(executable_path("just"))
     .arg("--choose")
+    .arg("--chooser=fzf")
     .current_dir(tmp.path())
     .env("PATH", path)
     .output()