Allow overriding FZF variables (#235)

`$FZF_DEFAULT_OPTS` won't work in some use cases because it has lower precedence then hardcoded settings such as `--exact`.

Usage:
```
export NAVI_FZF_OVERRIDES=" --no-exact"
navi
```

Fixes #232

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "navi"
-version = "2.0.5"
+version = "2.0.6"
 authors = ["Denis Isidoro <[email protected]>"]
 edition = "2018"
 

scripts/fix

@@ -4,14 +4,19 @@ set -euo pipefail
 export NAVI_HOME="$(cd "$(dirname "$0")/.." && pwd)"
 source "${NAVI_HOME}/scripts/install"
 
+cd "$NAVI_HOME"
+
 header "Cargo nighly fix..."
-cargo +nightly fix --clippy -Z unstable-options 2> /dev/null || true
+cargo +nightly fix --clippy -Z unstable-options || true
 
 header "Cargo fix..."
-cargo fix 2> /dev/null || true
+cargo fix || true
 
 header "Cargo fmt..."
-cargo fmt 2> /dev/null || true
+cargo fmt || true
 
 header "dot code beautify..."
-find scripts -type f | xargs -I% dot code beautify 2> /dev/null || true
+find scripts -type f | xargs -I% dot code beautify % || true
+
+header "clippy..."
+cargo clippy || true

src/cmds/core.rs

@@ -65,6 +65,7 @@ fn prompt_with_suggestions(config: &Config, suggestion: &cheat::Value) -> String
     let mut opts = fzf::Opts {
         preview: false,
         autoselect: !config.no_autoselect,
+        overrides: config.fzf_overrides_var.as_ref(),
         ..Default::default()
     };
 

src/option.rs

@@ -34,13 +34,14 @@ pub struct Config {
     #[structopt(long)]
     pub no_preview: bool,
 
-    // #[structopt(long)]
-    // pub col_widths: Option<String>,
-    /// Overrides for fzf commands (must start with an empty space)
-    #[structopt(long)]
-    #[structopt(long)]
+    /// FZF overrides for cheat selection  (must start with an empty space)
+    #[structopt(long, env = "NAVI_FZF_OVERRIDES")]
     pub fzf_overrides: Option<String>,
 
+    /// FZF overrides for variable selection  (must start with an empty space)
+    #[structopt(long, env = "NAVI_FZF_OVERRIDES_VAR")]
+    pub fzf_overrides_var: Option<String>,
+
     #[structopt(subcommand)]
     pub cmd: Option<Command>,
 }