feat(shell): add bash support for smart autocomplete and shell history (#184)

Fixes #180

.config/config.toml

@@ -140,8 +140,9 @@ toggle_preview = "ctrl-o"
 # ----------------------------------------------------------------------------
 #
 # The shell integration feature allows you to use television as a picker for
-# your shell commands. E.g. typing `git checkout <CTRL-T>` will open television
+# your shell commands (as well as your shell history with <CTRL-R>).
-# with a list of branches to choose from.
+# E.g. typing `git checkout <CTRL-T>` will open television with a list of
+# branches to choose from.
 
 [shell_integration.commands]
 # Add your commands here. Each key is a command that will trigger tv with the
@@ -160,9 +161,6 @@ toggle_preview = "ctrl-o"
 # "cat" = "files"
 # ```
 
-# shell history (according to your shell)
-"" = "zsh-history"
-
 # environment variables
 "export" = "env"
 "unset" = "env"

crates/television-utils/shell/completion.bash

@@ -0,0 +1,24 @@
+function tv_smart_autocomplete() {
+  local current_prompt="${READLINE_LINE:0:$READLINE_POINT}"
+
+  local output=$(tv --autocomplete-prompt "$current_prompt")
+
+  if [[ -n $output ]]; then
+    READLINE_LINE=$current_prompt$output
+    READLINE_POINT=${#READLINE_LINE}
+  fi
+}
+
+function tv_shell_history() {
+  local current_prompt="${READLINE_LINE:0:$READLINE_POINT}"
+
+  local output=$(tv bash-history --input "$current_prompt")
+
+  if [[ -n $output ]]; then
+    READLINE_LINE=$output
+    READLINE_POINT=${#READLINE_LINE}
+  fi
+}
+
+bind -x '"\C-t": tv_smart_autocomplete'
+bind -x '"\C-r": tv_shell_history'

crates/television-utils/src/shell.rs

@@ -10,9 +10,11 @@ pub enum Shell {
 }
 
 const COMPLETION_ZSH: &str = include_str!("../shell/completion.zsh");
+const COMPLETION_BASH: &str = include_str!("../shell/completion.bash");
 
 pub fn completion_script(shell: Shell) -> Result<&'static str> {
     match shell {
+        Shell::Bash => Ok(COMPLETION_BASH),
         Shell::Zsh => Ok(COMPLETION_ZSH),
         _ => color_eyre::eyre::bail!(
             "This shell is not yet supported: {:?}",