cli (blog/preview): Fix preview:

- configuration handling was not updated
- there was a typo in `open_cb`

libervia/cli/cmd_blog.py

@@ -55,7 +55,6 @@ SYNTAX_EXT = {
 }
 
 
-CONF_SYNTAX_EXT = "syntax_ext_dict"
 BLOG_TMP_DIR = "blog"
 # key to remove from metadata tmp file if they exist
 KEY_TO_REMOVE_METADATA = (
@@ -93,21 +92,24 @@ RE_ATTACHMENT_METADATA = re.compile(r"^(?P<key>[a-z_]+)=(?P<value>.*)")
 ALLOWER_ATTACH_MD_KEY = ("desc", "media_type", "external")
 
 
-async def guess_syntax_from_path(host, sat_conf, path):
-    """Return syntax guessed according to filename extension
+async def guess_syntax_from_path(host: "base.LiberviaCli", path: Path) -> str:
+    """Guess syntax to use according to a file's name extension.
 
-    @param sat_conf(ConfigParser.ConfigParser): instance opened on sat configuration
-    @param path(str): path to the content file
-    @return(unicode): syntax to use
+    If no matching extension is found, fall back to the profile's default
+    composition syntax.
+
+    @param host: CLI host
+    @param path: path to the content file
+    @return: syntax name to use
     """
-    # we first try to guess syntax with extension
-    ext = os.path.splitext(path)[1][1:]  # we get extension without the '.'
+    # Try to match the file extension against known syntaxes
+    ext = os.path.splitext(path)[1][1:]  # strip the leading dot
     if ext:
-        for k, v in SYNTAX_EXT.items():
-            if k and ext == v:
-                return k
+        for syntax, ext_name in SYNTAX_EXT.items():
+            if syntax and ext == ext_name:
+                return syntax
 
-                # if not found, we use current syntax
+    # Extension not found or empty, fall back to profile default
     return await host.bridge.param_get_a("Syntax", "Composition", "value", host.profile)
 
 
@@ -952,7 +954,7 @@ class Preview(base.CommandBase, common.BaseEdit):
         if self.open_cb_cmd is None:
             open_cb = self.show_preview
         else:
-            open_cp = self.open_preview_ext
+            open_cb = self.open_preview_ext
 
         self.update_cb_cmd = self.cli_settings.blog_preview_update_cmd
         if self.update_cb_cmd is None:
@@ -971,7 +973,7 @@ class Preview(base.CommandBase, common.BaseEdit):
                 self.host.quit(C.EXIT_NOT_FOUND)
 
         self.syntax = await guess_syntax_from_path(
-            self.host, sat_conf, self.content_file_path
+            self.host, self.content_file_path
         )
 
         # at this point the syntax is converted, we can display the preview