[feat] add option to use file_path() with the %p keyword (#431)

Use a absolute path where it is needed. like:
    { keys = ["m", "w"], commands = ["shell swaymsg output * bg %p fit"] },

Signed-off-by: luteran42 <luteranlajos@protonmail.ch>

2 files changed, 28 insertions, 5 deletions

diff --git a/docs/configuration/keymap.toml.md b/docs/configuration/keymap.toml.md
index 0a3b791..d44660f 100644
--- a/docs/configuration/keymap.toml.md
+++ b/docs/configuration/keymap.toml.md
@@ -119,25 +119,31 @@ function joshuto() {
 
 ### `shell`: runs a shell command
 
-- `%s` is substituted by a list of all selected files or by the file under the cursor, if none is selected
+- `%s` and `%p` are substituted by a list of all selected files or by the file under the cursor, if none is selected
 - When running the external program, the directory shown in Joshuto is set as “working directory”,
-  the file names substituted for `%s` are given without path.
+  the file names substituted for `%s` are given without path. If you want the absolute path, use `%p`.
 - Example: `:shell touch file.txt` will create a file called `file.txt`
 - Example for `keymap.toml`: To open all selected files with `nvim`, one can add a keybinding like this:
   ```toml
   keymap = [ //..
-     { keys = [ "e", "v" ], command = "shell nvim %s" }
+     { keys = [ "e", "v" ], commands = ["shell nvim %s"] }
+  ]
+  ```
+- To set a wallpaper on sway using the absolute path of an image file:
+  ```toml
+  keymap = [ //..
+    { keys = ["m", "w"], commands = ["shell swaymsg output * bg %p fit"] }
   ]
   ```
 
 ### `spawn`: runs a shell command in the background
 
-- Supports `%s`, just like the `shell` command.
+- Supports `%s`and `%p`, just like the `shell` command.
 - Example for `keymap.toml`: To open all selected files or directories with `sxiv`,
   one can add a keybinding like this:
   ```toml
   keymap = [ //..
-     { keys = [ "i" ], command = "spawn sxiv -t %s" }
+     { keys = [ "i" ], commands = ["spawn sxiv -t %s"] }
   ]
   ```
 
diff --git a/src/commands/sub_process.rs b/src/commands/sub_process.rs
index 9f97af1..437112e 100644
--- a/src/commands/sub_process.rs
+++ b/src/commands/sub_process.rs
@@ -39,6 +39,23 @@ fn execute_sub_process(
                     command.arg(x);
                 });
             }
+            "%p" => {
+                if let Some(curr_list) = context.tab_context_ref().curr_tab_ref().curr_list_ref() {
+                    let mut i = 0;
+                    curr_list
+                        .iter_selected()
+                        .map(|e| e.file_path())
+                        .for_each(|file_path| {
+                            command.arg(file_path);
+                            i += 1;
+                        });
+                    if i == 0 {
+                        if let Some(entry) = curr_list.curr_entry_ref() {
+                            command.arg(entry.file_path());
+                        }
+                    }
+                }
+            }
             s => {
                 command.arg(s);
             }