fix: --env flag missing file/wrong syntax of file raises error

cli/args/mod.rs

@@ -857,13 +857,17 @@ impl CliOptions {
       };
 
     if let Some(env_file_name) = &flags.env_file {
-      if (from_filename(env_file_name)).is_err() {
-        log::info!(
-          "{} The `--env` flag was used, but the dotenv file '{}' was not found.",
-          colors::yellow("Warning"),
-          env_file_name
-        );
-      }
+      match from_filename(env_file_name) {
+          Ok(_) => (),
+          Err(error) => {
+            match error {
+              dotenvy::Error::LineParse(line, index)=> log::info!("{} Parsing failed within the specified environment file: {} at index: {} of the value: {}",colors::yellow("Warning"), env_file_name, index, line),
+              dotenvy::Error::Io(_)=> log::info!("{} The `--env` flag was used, but the environment file specified '{}' was not found.",colors::yellow("Warning"),env_file_name),
+              dotenvy::Error::EnvVar(_)=>log::info!("{} One or more of the environment variables isn't present or not unicode within the specified environment file: {}",colors::yellow("Warning"),env_file_name),
+              _ => log::info!("{} Unknown failure occurred with the specified environment file: {}", colors::yellow("Warning"), env_file_name),
+            }
+          }
+        }
     }
 
     let disable_deprecated_api_warning = flags.log_level

tests/specs/eval/env_unparsable_file/__test__.jsonc

@@ -0,0 +1,4 @@
+{
+  "args": "eval --env=../../../testdata/env_unparsable console.log(Deno.env.get(\"Another_FOO\"))",
+  "output": "main.out"
+}

tests/specs/eval/env_unparsable_file/main.out

@@ -0,0 +1,2 @@
+Warning Parsing failed within the specified environment file: ../../../testdata/env_unparsable at index: 3 of the value: c:\path
+undefined

tests/specs/run/env_unparsable_file/__test__.jsonc

@@ -0,0 +1,4 @@
+{
+  "args": "run --env=../../../testdata/env_unparsable --allow-env main.js",
+  "output": "main.out"
+}

tests/specs/run/env_unparsable_file/main.js

@@ -0,0 +1,3 @@
+console.log(Deno.env.get("FOO"));
+console.log(Deno.env.get("ANOTHER_FOO"));
+console.log(Deno.env.get("MULTILINE"));

tests/specs/run/env_unparsable_file/main.out

@@ -0,0 +1,4 @@
+Warning Parsing failed within the specified environment file: ../../../testdata/env_unparsable at index: 3 of the value: c:\path
+valid
+undefined
+undefined

tests/testdata/env_unparsable

@@ -0,0 +1,4 @@
+FOO=valid
+ANOTHER_FOO=c:\path
+MULTILINE="First Line
+Second Line"

tests/testdata/eval/env_file_missing.out

@@ -1,2 +1,2 @@
-Warning The `--env` flag was used, but the dotenv file 'missing' was not found.
+Warning The `--env` flag was used, but the environment file specified 'missing' was not found.
 undefined

tests/testdata/run/env_file_missing.out

@@ -1,4 +1,4 @@
-Warning The `--env` flag was used, but the dotenv file 'missing' was not found.
+Warning The `--env` flag was used, but the environment file specified 'missing' was not found.
 undefined
 undefined
 undefined