Issue #17562 has been reported by ima1zumi (Mari Imaizumi).

----------------------------------------
Feature #17562: Update -E option in --help
https://bugs.ruby-lang.org/issues/17562

* Author: ima1zumi (Mari Imaizumi)
* Status: Open
* Priority: Normal
----------------------------------------
I would like to propose explaining the arguments of the -E option specifically in --help.

The current explanation is a bit difficult for beginners to understand.
I tried to change `Encoding.default_internal`, but I changed `Encoding.default_external` by mistake. That confused me because I didn't know how to use it. Therefore, I have updated the explanation.

```diff
diff --git a/ruby.c b/ruby.c
index 5bac96b5e1..4f8975a399 100644
--- a/ruby.c
+++ b/ruby.c
@@ -281,7 +281,7 @@ usage(const char *name, int help, int highlight, int columns)
        M("-Cdirectory",   "",                     "cd to directory before executing your script"),
        M("-d",            ", --debug",            "set debugging flags (set $DEBUG to true)"),
        M("-e 'command'",  "",                     "one line of script. Several -e's allowed. Omit [programfile]"),
-       M("-Eex[:in]",     ", --encoding=ex[:in]", "specify the default external and internal character encodings"),
+       M("-Eexternal-encoding[:internal-encoding]",", --encoding=external-encoding[:internal-encoding]","specify the default external and internal character encodings"),
        M("-Fpattern",     "",                     "split() pattern for autosplit (-a)"),
        M("-i[extension]", "",                     "edit ARGV files in place (make backup if extension supplied)"),
        M("-Idirectory",   "",                     "specify $LOAD_PATH directory (may be used more than once)"),
```

PR: https://github.com/ruby/ruby/pull/4099



-- 
https://bugs.ruby-lang.org/

Unsubscribe: <mailto:ruby-core-request / ruby-lang.org?subject=unsubscribe>
<http://lists.ruby-lang.org/cgi-bin/mailman/options/ruby-core>