From 185ecf1f45e6bf2198fe9ca3bb7ad175f412a014 Mon Sep 17 00:00:00 2001
From: Lunaphied <lunaphied@lunaphied.me>
Date: Thu, 21 Mar 2024 21:48:34 -0600
Subject: Improve new CLI UX by supporting short `-E` flag for `--expr`

Change-Id: I55881c846da8416a92a14deedfa5bbbf09a122fb
---
 src/libcmd/installables.cc | 1 +
 src/nix/eval.md            | 4 ++--
 2 files changed, 3 insertions(+), 2 deletions(-)

(limited to 'src')

diff --git a/src/libcmd/installables.cc b/src/libcmd/installables.cc
index 973db62b0..b40632887 100644
--- a/src/libcmd/installables.cc
+++ b/src/libcmd/installables.cc
@@ -187,6 +187,7 @@ SourceExprCommand::SourceExprCommand()
 
     addFlag({
         .longName = "expr",
+        .shortName = 'E',
         .description = "Interpret [*installables*](@docroot@/command-ref/new-cli/nix.md#installables) as attribute paths relative to the Nix expression *expr*.",
         .category = installablesCategory,
         .labels = {"expr"},
diff --git a/src/nix/eval.md b/src/nix/eval.md
index 48d5aa597..d1daaf755 100644
--- a/src/nix/eval.md
+++ b/src/nix/eval.md
@@ -8,10 +8,10 @@ R""(
   # nix eval --expr '1 + 2'
   ```
 
-* Evaluate a Nix expression to JSON:
+* Evaluate a Nix expression to JSON using the short-form expression flag:
 
   ```console
-  # nix eval --json --expr '{ x = 1; }'
+  # nix eval --json -E '{ x = 1; }'
   {"x":1}
   ```
 
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