Update documentation

README.md

@@ -1,8 +1,6 @@
 # Kuuubedit
 
-Powerful headless text editor for processing large files.
-
-WARNING: Files are not buffered, the file size capable of being loaded is limited by your memory size.
+Powerful headless text editor for processing enormous files.
 
 ## Args
 
@@ -14,7 +12,9 @@ WARNING: Files are not buffered, the file size capable of being loaded is limite
 
 - `-u`, `--undo`: Enables the undo command.
 
-- `-b BUFFER`, `--buffer BUFFER`: Sets file buffer size (unfinished, currently, only --no-buf is supported).
+- `-b BUFFER`, `--buffer BUFFER`: Sets file buffer size in bytes. Default: 100000000 (100MB), Minimum: 1024 (1KB), Maximum: 18446744073709551615 (18.4EB).
+
+- `-n`, `--no-buf`: Disabled file buffering.
 
 ## Commands
 

src/args_parser.rs

@@ -10,11 +10,12 @@ pub struct Args {
     pub undo: bool,
 
     /// Sets file buffer size
-    #[arg(short, long, default_value_t = 100000000, value_parser = buffer_size_check)]
+    /// [min: 1024] [max: 18446744073709551615]
+    #[arg(short, long, default_value_t = 100000000, value_parser = buffer_size_check, verbatim_doc_comment)]
     pub buffer: u64,
 
     /// Disables file buffering
-    #[arg(long)]
+    #[arg(short, long)]
     pub no_buf: bool,
 
     /// Path to file to open