From ca6a701b8036db84fd149dceca665966748491a8 Mon Sep 17 00:00:00 2001
From: Maxime Coste <mawww@kakoune.org>
Date: Fri, 4 Nov 2022 16:40:07 +1100
Subject: [PATCH] Add -to-shell-script echo switch

This feature simplifies various small use cases and is a good
companion to the existing -to-file switch.
---
 doc/pages/commands.asciidoc |  4 ++++
 src/commands.cc             | 10 ++++++----
 2 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/doc/pages/commands.asciidoc b/doc/pages/commands.asciidoc
index 9df31c2d..5b158ef8 100644
--- a/doc/pages/commands.asciidoc
+++ b/doc/pages/commands.asciidoc
@@ -260,6 +260,10 @@ of the file onto the filesystem
         write the given text to the given file on the host
         filesystem.
 
+    *-to-shell-script* <script>:::
+        execute the given shell script with the given text
+        written to its standard input
+
     *-quoting* <quoting>:::
         define how arguments are quoted in echo output:
 
diff --git a/src/commands.cc b/src/commands.cc
index 2efdf62a..660a2726 100644
--- a/src/commands.cc
+++ b/src/commands.cc
@@ -1427,13 +1427,14 @@ const CommandDesc echo_cmd = {
         { { "markup", { false, "parse markup" } },
           { "quoting", { true, "quote each argument separately using the given style (raw|kakoune|shell)" } },
           { "to-file", { true, "echo contents to given filename" } },
+          { "to-shell-script", { true, "pipe contents to given shell script" } },
           { "debug", { false, "write to debug buffer instead of status line" } } },
         ParameterDesc::Flags::SwitchesOnlyAtStart
     },
     CommandFlags::None,
     CommandHelper{},
     CommandCompleter{},
-    [](const ParametersParser& parser, Context& context, const ShellContext&)
+    [](const ParametersParser& parser, Context& context, const ShellContext& shell_context)
     {
         String message;
         if (auto quoting = parser.get_switch("quoting"))
@@ -1443,9 +1444,10 @@ const CommandDesc echo_cmd = {
             message = join(parser, ' ', false);
 
         if (auto filename = parser.get_switch("to-file"))
-            return write_to_file(*filename, message);
-
-        if (parser.get_switch("debug"))
+            write_to_file(*filename, message);
+        else if (auto command = parser.get_switch("to-shell-script"))
+            ShellManager::instance().eval(*command, context, message, ShellManager::Flags::None, shell_context);
+        else if (parser.get_switch("debug"))
             write_to_debug_buffer(message);
         else if (parser.get_switch("markup"))
             context.print_status(parse_display_line(message, context.faces()));