verb filtering by file extension

Fix #508

3 files changed, 36 insertions, 2 deletions

diff --git a/website/docs/conf_verbs.md b/website/docs/conf_verbs.md
index 51fe1ce..4a488f0 100644
--- a/website/docs/conf_verbs.md
+++ b/website/docs/conf_verbs.md
@@ -33,6 +33,7 @@ invocation | | how the verb is called by the user, with placeholders for argumen
 internal | | execution, when your verb is based on a predefined broot verb
 external | | execution, when your verb is based on an external command
 cmd | | a semicolon sequence to execute, similar to an argument you pass to `--cmd`
+extensions | | optional array of allowed file extensions
 key | | a keyboard key triggering execution
 keys | | several keyboard shortcuts triggering execution (if you want to have the choice)
 shortcut | | an alternate way to call the verb (without the arguments part)
@@ -82,6 +83,36 @@ invocation = "xtv"
 external = ["xterm", "-e", "nvim {file}"]
 ```
 
+# File extensions
+
+You may filter the execution of a verb with file extensions.
+
+For example, if you'd want <kbd>enter</kbd> to work as predefined in most cases but just choose a specific action for some files, you might add this verb definition:
+
+```hjson
+{
+    name: open-code
+    key: enter
+    extensions: [
+        rs
+        js
+        toml
+    ]
+    execution: "$EDITOR +{line} {file}"
+    working_dir: "{root}"
+    leave_broot: false
+}
+```
+```toml
+[[verbs]]
+name = "open-code"
+key = "enter"
+extensions = ["rs", "js", "toml"]
+execution = "$EDITOR +{line} {file}"
+working_dir = "{root}"
+leave_broot = false
+```
+
 # Shortcuts and Verb search
 
 **broot** looks for the first token following a space or `:` and tries to find the verb you want.
diff --git a/website/docs/css/tab-langs.css b/website/docs/css/tab-langs.css
index 67ab38a..0dbc294 100644
--- a/website/docs/css/tab-langs.css
+++ b/website/docs/css/tab-langs.css
@@ -14,12 +14,14 @@
 	border-left: solid 1px #e1e4e5;
 	background: #f8f8f8;
 	cursor: auto;
-	z-index: 2;
+}
+
+pre.tabbed {
 }
 
 /* Hljs support for unknown languages like Hjson has
  * regressed, I have to hack */
-pre code.language-Hjson {
+pre code.language-Hjson, pre code.language-hjson {
 	display: block;
 	overflow-x: auto;
 	padding: 0.5em;
diff --git a/website/docs/js/tab-langs.js b/website/docs/js/tab-langs.js
index c05eae5..937e56f 100644
--- a/website/docs/js/tab-langs.js
+++ b/website/docs/js/tab-langs.js
@@ -18,6 +18,7 @@ function find_groups(langs) {
 		);
 		if (!lang) return;
 		let pre = this.parentElement;
+		pre.classList.add("tabbed");
 		let last_group = groups[groups.length-1];
 		let item = { lang, pre };
 		if (last_group) {