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@v4rgas v4rgas commented May 23, 2025

Summary by CodeRabbit

  • Bug Fixes
    • Improved detection of the Fish shell version to ensure more accurate version reporting in the application.

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coderabbitai bot commented May 23, 2025

Walkthrough

The Fish shell integration was updated to retrieve the shell version using a different command. The corresponding test was adjusted to match the new command output, and an assertion about command arguments was removed. No public interfaces or method signatures were changed.

Changes

File(s) Change Summary
thefuck_3/thefuck/shells/fish.py Changed version retrieval in Fish.info() to use fish -c 'echo $FISH_VERSION' instead of parsing fish --version.
thefuck_3/tests/shells/test_fish.py Updated test to match new version output and removed assertion on command arguments.

Poem

In the shell where the fishes swim,
A version check, once old and grim,
Now echoes clear, no tokens split,
The rabbit grins—it’s a perfect fit!
With simpler tests and cleaner code,
Onward down the shell path, we hop and goad! 🐇🐟

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@blar-app blar-app bot added size S Pull Request size is Small Impact XS The PR impact is very low labels May 23, 2025
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blar-app bot commented May 23, 2025

Summary

This PR updates the Fish shell integration in the 'thefuck' utility by modifying the 'info' method to fetch the version using 'fish -c echo $FISH_VERSION' instead of the previous command. Additionally, the test for this method has been adjusted to match the new output format, mocking the subprocess to return just the version number. These changes enhance the accuracy and reliability of detecting the Fish shell version within the utility, ensuring consistent behavior across different Fish versions and environments.

Pull Request Impact: 0
We measure the impact of a Pull Request on the codebase by counting the number of references to the changed code.

🔍 See your Change Graph

🔄 File Changes Overview
File Description
thefuck_3/tests/shells/test_fish.py Modified the test for the 'info' method to change the expected output of the mocked subprocess, and adjusted the assertion accordingly. Specifically, changed the mocked stdout.read to return only the version number as bytes and updated the assertion to check for the correct version string. The test for the command invocation remains unchanged.
thefuck_3/thefuck/shells/fish.py The method 'info' has been modified to retrieve the Fish shell version by executing 'fish -c echo $FISH_VERSION' instead of 'fish --version'. It now captures and strips the output to obtain the version string.
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Actionable comments posted: 1

📜 Review details

Configuration used: CodeRabbit UI
Review profile: CHILL
Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between d0d6980 and 02cbd63.

📒 Files selected for processing (2)
  • thefuck_3/tests/shells/test_fish.py (1 hunks)
  • thefuck_3/thefuck/shells/fish.py (1 hunks)
🧰 Additional context used
🧬 Code Graph Analysis (1)
thefuck_3/thefuck/shells/fish.py (1)
thefuck_3/tests/shells/test_fish.py (1)
  • Popen (14-21)
🔇 Additional comments (1)
thefuck_3/tests/shells/test_fish.py (1)

117-117: Test correctly updated to match implementation changes.

The mocked output change from b'fish, version 3.5.9\n' to b'3.5.9' properly aligns with the new fish -c 'echo $FISH_VERSION' command that outputs just the version number.

Comment on lines +108 to 111
proc = Popen(['fish', '-c', 'echo $FISH_VERSION'],
stdout=PIPE, stderr=DEVNULL)
version = proc.stdout.read().decode('utf-8').split()[-1]
version = proc.stdout.read().decode('utf-8').strip()
return u'Fish Shell {}'.format(version)
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💡 Verification agent

🧩 Analysis chain

LGTM! Cleaner approach to version retrieval.

The change from fish --version to fish -c 'echo $FISH_VERSION' is more direct and eliminates the need for output parsing. This should be more reliable and efficient.

Please verify that the $FISH_VERSION environment variable is available across all supported Fish shell versions:


🏁 Script executed:

#!/bin/bash
# Verify Fish shell version variable availability
echo "Testing Fish shell version retrieval methods"
echo "Method 1 (new): fish -c 'echo \$FISH_VERSION'"
fish -c 'echo $FISH_VERSION' 2>/dev/null || echo "Failed"
echo "Method 2 (old): fish --version"
fish --version 2>/dev/null || echo "Failed"

Length of output: 364


Ensure reliable fish version retrieval with --no-config and fallback

Using fish -c 'echo $FISH_VERSION' can load users’ config.fish (producing unexpected output) and may not set $FISH_VERSION in non-interactive or older shells. Please adjust the implementation to:

  • Invoke fish with --no-config to skip ~/.config/fish/config.fish.
  • Fall back to the legacy --version flag when $FISH_VERSION is empty.

Suggested diff:

--- a/thefuck_3/thefuck/shells/fish.py
+++ b/thefuck_3/thefuck/shells/fish.py
@@ -108,7 +108,13 @@ class Fish(Shell):
-        proc = Popen(['fish', '-c', 'echo $FISH_VERSION'],
-                     stdout=PIPE, stderr=DEVNULL)
+        # Skip user config to avoid loading any custom prompts or scripts
+        proc = Popen(
+            ['fish', '--no-config', '-c', 'echo $FISH_VERSION'],
+            stdout=PIPE, stderr=DEVNULL
+        )
+        version = proc.stdout.read().decode('utf-8').strip()
+        # Fallback if FISH_VERSION is empty or unsupported
+        if not version:
+            proc = Popen(['fish', '--no-config', '--version'], stdout=PIPE, stderr=DEVNULL)
+            version = proc.stdout.read().decode('utf-8').strip()
+        return u'Fish Shell {}'.format(version)

This ensures consistency across environments and provides a safe fallback.

📝 Committable suggestion

‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change
proc = Popen(['fish', '-c', 'echo $FISH_VERSION'],
stdout=PIPE, stderr=DEVNULL)
version = proc.stdout.read().decode('utf-8').split()[-1]
version = proc.stdout.read().decode('utf-8').strip()
return u'Fish Shell {}'.format(version)
# Skip user config to avoid loading any custom prompts or scripts
proc = Popen(
['fish', '--no-config', '-c', 'echo $FISH_VERSION'],
stdout=PIPE, stderr=DEVNULL
)
version = proc.stdout.read().decode('utf-8').strip()
# Fallback if FISH_VERSION is empty or unsupported
if not version:
proc = Popen(
['fish', '--no-config', '--version'],
stdout=PIPE, stderr=DEVNULL
)
version = proc.stdout.read().decode('utf-8').strip()
return u'Fish Shell {}'.format(version)
🤖 Prompt for AI Agents
In thefuck_3/thefuck/shells/fish.py around lines 108 to 111, update the fish
version retrieval to invoke fish with the --no-config flag to avoid loading user
config files that may produce unexpected output. After reading $FISH_VERSION,
check if it is empty; if so, fall back to running fish --version to get the
version string. This ensures consistent and reliable version detection across
different fish shell versions and environments.

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blar-app bot commented May 23, 2025

✅ No debugger issues found 🐛
❕ It looks like we couldn't find any design patterns in the Wiki for this repository. Let's add some at: app.blar.io/wiki

Review's done! 🚀 Check out the feedback and let me know if you need anything! – Blar

@v4rgas
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v4rgas commented May 23, 2025

CODERABBIT

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