From 28a6a5ea57c0a696538bb6de13a0ef27f1b5dbac Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jakub=20=C5=BD=C3=A1dn=C3=ADk?= <kubouch@gmail.com>
Date: Mon, 1 Mar 2021 19:48:22 +0200
Subject: [PATCH] Add option to invert match command selection (#3114)
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* Add option to invert match command selection

* Fix rustfmt error

* Rename match --exclude to --invert

To be more descriptive and conform to e.g. grep or ripgrep -v flag.
Also simplified the --invert flag description.

* Fix formatting when description got shorter

Co-authored-by: Jakub Žádník <jakub.zadnik@tuni.fi>
---
 crates/nu_plugin_match/src/match_.rs | 2 ++
 crates/nu_plugin_match/src/nu/mod.rs | 4 +++-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/crates/nu_plugin_match/src/match_.rs b/crates/nu_plugin_match/src/match_.rs
index 896e2188ad..b90c5e2dca 100644
--- a/crates/nu_plugin_match/src/match_.rs
+++ b/crates/nu_plugin_match/src/match_.rs
@@ -3,6 +3,7 @@ use regex::Regex;
 pub struct Match {
     pub column: String,
     pub regex: Regex,
+    pub invert: bool,
 }
 
 impl Match {
@@ -11,6 +12,7 @@ impl Match {
         Ok(Match {
             column: String::new(),
             regex: Regex::new("")?,
+            invert: false,
         })
     }
 }
diff --git a/crates/nu_plugin_match/src/nu/mod.rs b/crates/nu_plugin_match/src/nu/mod.rs
index 10b0a5b466..887044f107 100644
--- a/crates/nu_plugin_match/src/nu/mod.rs
+++ b/crates/nu_plugin_match/src/nu/mod.rs
@@ -24,6 +24,7 @@ impl Plugin for Match {
                 "dotall mode: allow a dot . to match newline character \\n",
                 Some('s'),
             )
+            .switch("invert", "invert the match", Some('v'))
             .filter())
     }
 
@@ -31,6 +32,7 @@ impl Plugin for Match {
         let insensitive = call_info.args.has("insensitive");
         let multiline = call_info.args.has("multiline");
         let dotall = call_info.args.has("dotall");
+        self.invert = call_info.args.has("invert");
         if let Some(args) = call_info.args.positional {
             match &args[0] {
                 Value {
@@ -113,7 +115,7 @@ impl Plugin for Match {
                 return Err(ShellError::labeled_error("Expected row", "value", tag));
             }
         }
-        if flag {
+        if flag ^ self.invert {
             Ok(vec![Ok(ReturnSuccess::Value(input))])
         } else {
             Ok(vec![])