fix(from-context): revert stdin handling

git-cliff/src/lib.rs

@@ -45,14 +45,8 @@ use std::fs::{
 	self,
 	File,
 };
-use std::io::{
-	self,
-	IsTerminal,
-};
-use std::path::{
-	Path,
-	PathBuf,
-};
+use std::io;
+use std::path::Path;
 use std::time::{
 	SystemTime,
 	UNIX_EPOCH,
@@ -527,9 +521,6 @@ pub fn run(mut args: Opt) -> Result<()> {
 	if args.count_tags.is_some() {
 		config.git.count_tags.clone_from(&args.count_tags);
 	}
-	if !std::io::stdin().is_terminal() {
-		args.from_context = Some(PathBuf::from("-"));
-	}
 
 	// Process commits and releases for the changelog.
 	if let Some(BumpOption::Specific(bump_type)) = args.bump {

website/docs/usage/load-context.md

@@ -21,9 +21,6 @@ git cliff --from-context context.json
 
 # process context loaded from stdin
 git cliff --from-context -
-
-# or simply
-cat context.json | git-cliff
 ```
 
 Free-form metadata can be added to release objects and commit objects in the context using the `extra` field: