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fix(cli): use plain text prompt without ANSI colors

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ANSI color codes in rustyline prompts cause various issues:
- \x01...\x02 markers break cursor movement
- Separate prefix printing causes gaps or disappearing text

Simplified to plain text prompt: 'butler | finances> '
This ensures reliable cursor positioning and tab completion.
This commit is contained in:
Dhanji R. Prasanna
2026-01-22 10:27:27 +05:30
parent cb1f99c41c
commit 067c69723b
1 changed files with 28 additions and 54 deletions
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82
crates/g3-cli/src/interactive.rs
View File

@@ -23,14 +23,12 @@ use crate::utils::display_context_progress;
/// Build the interactive prompt string.
///
/// Format:
/// Returns a tuple of (prefix_to_print, actual_prompt) where prefix_to_print
/// contains ANSI colors and should be printed before readline, and actual_prompt is plain text.
/// - Multiline mode: `"... > "`
/// - No project: `"agent_name> "` (defaults to "g3")
/// - With project: `"agent_name | project_name> "` where `| project_name>` is blue
pub fn build_prompt(in_multiline: bool, agent_name: Option<&str>, active_project: &Option<Project>) -> (String, String) {
/// - With project: `"agent_name | project_name> "`
pub fn build_prompt(in_multiline: bool, agent_name: Option<&str>, active_project: &Option<Project>) -> String {
if in_multiline {
(String::new(), "... > ".to_string())
"... > ".to_string()
} else {
let base_name = agent_name.unwrap_or("g3");
if let Some(project) = active_project {
@@ -38,17 +36,9 @@ pub fn build_prompt(in_multiline: bool, agent_name: Option<&str>, active_project
.file_name()
.and_then(|n| n.to_str())
.unwrap_or("project");
// Return colored prefix to print, and plain prompt for readline
let prefix = format!(
"{} {}| {}>{} ",
base_name,
SetForegroundColor(Color::Blue),
project_name,
ResetColor
);
(prefix, String::new())
format!("{} | {}> ", base_name, project_name)
} else {
(String::new(), format!("{}> ", base_name))
format!("{}> ", base_name)
}
}
}
@@ -183,16 +173,8 @@ pub async fn run_interactive<W: UiWriter>(
// Display context window progress bar before each prompt
display_context_progress(&agent, &output);
// Build prompt - returns (colored_prefix, plain_prompt)
// We print the colored prefix first, then use plain prompt for readline
// This avoids ANSI codes breaking rustyline's line length calculation
let (prefix, prompt) = build_prompt(in_multiline, agent_name, &active_project);
if !prefix.is_empty() {
use std::io::Write;
print!("{}", prefix);
let _ = std::io::stdout().flush();
}
// Build prompt
let prompt = build_prompt(in_multiline, agent_name, &active_project);
let readline = rl.readline(&prompt);
match readline {
@@ -343,69 +325,62 @@ mod tests {
#[test]
fn test_build_prompt_default() {
let (prefix, prompt) = build_prompt(false, None, &None);
assert!(prefix.is_empty());
let prompt = build_prompt(false, None, &None);
assert_eq!(prompt, "g3> ");
}
#[test]
fn test_build_prompt_with_agent_name() {
let (prefix, prompt) = build_prompt(false, Some("butler"), &None);
assert!(prefix.is_empty());
let prompt = build_prompt(false, Some("butler"), &None);
assert_eq!(prompt, "butler> ");
}
#[test]
fn test_build_prompt_multiline() {
let (prefix, prompt) = build_prompt(true, None, &None);
assert!(prefix.is_empty());
let prompt = build_prompt(true, None, &None);
assert_eq!(prompt, "... > ");
// Multiline takes precedence over agent name
let (prefix, prompt) = build_prompt(true, Some("butler"), &None);
assert!(prefix.is_empty());
let prompt = build_prompt(true, Some("butler"), &None);
assert_eq!(prompt, "... > ");
// Multiline takes precedence over project
let project = Some(create_test_project("myapp"));
let (prefix, prompt) = build_prompt(true, None, &project);
assert!(prefix.is_empty());
let prompt = build_prompt(true, None, &project);
assert_eq!(prompt, "... > ");
}
#[test]
fn test_build_prompt_with_project() {
let project = Some(create_test_project("myapp"));
let (prefix, prompt) = build_prompt(false, None, &project);
// Project name should be in the colored prefix, prompt should be empty
assert!(prefix.contains("g3"));
assert!(prefix.contains("myapp"));
assert!(prefix.contains("|"));
assert!(prompt.is_empty());
let prompt = build_prompt(false, None, &project);
// Should contain the project name in the prompt
assert!(prompt.contains("g3"));
assert!(prompt.contains("myapp"));
assert!(prompt.contains("|"));
}
#[test]
fn test_build_prompt_with_agent_and_project() {
let project = Some(create_test_project("myapp"));
let (prefix, prompt) = build_prompt(false, Some("carmack"), &project);
// Should contain both agent name and project name in prefix
assert!(prefix.contains("carmack"));
assert!(prefix.contains("myapp"));
assert!(prefix.contains("|"));
assert!(prompt.is_empty());
let prompt = build_prompt(false, Some("carmack"), &project);
// Should contain both agent name and project name
assert!(prompt.contains("carmack"));
assert!(prompt.contains("myapp"));
assert!(prompt.contains("|"));
}
#[test]
fn test_build_prompt_unproject_resets() {
// Simulate /project loading
let project = Some(create_test_project("myapp"));
let (prefix_with_project, _) = build_prompt(false, None, &project);
assert!(prefix_with_project.contains("myapp"));
let prompt_with_project = build_prompt(false, None, &project);
assert!(prompt_with_project.contains("myapp"));
// Simulate /unproject (sets active_project to None)
let (prefix_after_unproject, prompt_after_unproject) = build_prompt(false, None, &None);
assert!(prefix_after_unproject.is_empty());
let prompt_after_unproject = build_prompt(false, None, &None);
assert_eq!(prompt_after_unproject, "g3> ");
assert!(!prompt_after_unproject.contains("myapp"));
}
#[test]
@@ -416,9 +391,8 @@ mod tests {
content: "test".to_string(),
loaded_files: vec![],
});
let (prefix, prompt) = build_prompt(false, None, &project);
assert!(prefix.contains("awesome-app"));
assert!(prompt.is_empty());
let prompt = build_prompt(false, None, &project);
assert!(prompt.contains("awesome-app"));
}
}