Add subcommand to print config file location

Signed-off-by: Manos Pitsidianakis <manos@pitsidianak.is>

meli/docs/meli.1

@@ -65,12 +65,6 @@ Create configuration file in
 .Pa path
 if given, or at
 .Pa $XDG_CONFIG_HOME/meli/config.toml
-.It Cm edit-config
-Edit configuration files with
-.Ev EDITOR
-or
-.Ev VISUAL Ns
-\&.
 .It Cm test-config Op Ar path
 Test a configuration file for syntax issues or missing options.
 .It Cm man Op Ar page
@@ -81,14 +75,26 @@ Install manual pages to the first location provided by
 or
 .Xr manpath 1 ,
 unless you specify the directory as an argument.
+.It Cm compiled-with
+Print compile time feature flags of this binary.
+.It Cm edit-config
+Edit configuration files with
+.Ev EDITOR
+or
+.Ev VISUAL Ns
+\&.
+.It Cm help
+Prints help information or the help of the given subcommand(s).
+.It Cm print-app-directories
+Print all directories that
+.Nm Ns
+ creates and uses.
+.It Cm print-config-path
+Print location of configuration file that will be loaded on normal app startup.
 .It Cm print-default-theme
 Print default theme keys and values in TOML syntax, to be used as a blueprint.
 .It Cm print-loaded-themes
 Print all loaded themes in TOML syntax.
-.It Cm print-used-paths
-Print all paths that are created and used.
-.It Cm compiled-with
-Print compile time feature flags of this binary.
 .It Cm view
 View mail from input file.
 .El

meli/src/args.rs

@@ -40,8 +40,11 @@ pub enum SubCommand {
     PrintDefaultTheme,
     /// print loaded themes in full to stdout and exit.
     PrintLoadedThemes,
-    /// print all paths that meli creates/uses.
-    PrintUsedPaths,
+    /// print all directories that meli creates/uses.
+    PrintAppDirectories,
+    /// print location of configuration file that will be loaded on normal app
+    /// startup.
+    PrintConfigPath,
     /// edit configuration files with `$EDITOR`/`$VISUAL`.
     EditConfig,
     /// create a sample configuration file with available configuration options.

meli/src/main.rs

@@ -101,6 +101,11 @@ fn run_app(opt: Opt) -> Result<()> {
         Some(SubCommand::EditConfig) => {
             return subcommands::edit_config();
         }
+        Some(SubCommand::PrintConfigPath) => {
+            let config_path = crate::conf::get_config_file()?;
+            println!("{}", config_path.display());
+            return Ok(());
+        }
         #[cfg(not(feature = "cli-docs"))]
         Some(SubCommand::Man(ManOpt {})) => {
             return Err(Error::new("error: this version of meli was not build with embedded documentation (cargo feature `cli-docs`). You might have it installed as manpages (eg `man meli`), otherwise check https://meli-email.org"));
@@ -122,7 +127,7 @@ fn run_app(opt: Opt) -> Result<()> {
             return Ok(());
         }
         Some(SubCommand::View { .. }) => {}
-        Some(SubCommand::PrintUsedPaths) => {
+        Some(SubCommand::PrintAppDirectories) => {
             println!(
                 "{}",
                 xdg::BaseDirectories::with_prefix("meli")