extern/nushell
1
0
Fork 1
mirror of https://github.com/nushell/nushell.git synced 2024-11-26 02:13:47 +01:00
Code Issues Packages Projects Releases Wiki Activity

Fixes Issue 7648 which crashes nushell and happens when an alias name is shorter than the alias command and the alias command is an external command. (#7779)

Browse Source
This commit is contained in:
Xoffio 2023-01-17 01:30:00 -05:00 committed by GitHub
parent f823c7cb5d
commit 8acced56b2
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 50 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
crates/nu-cli/src/completions/command_completions.rs
View File

@ -164,7 +164,7 @@ impl Completer for CommandCompletion {
.flattened
.iter()
.rev()
.skip_while(|x| x.0.end > pos)
.skip_while(|x| x.0.end + offset > pos)
.take_while(|x| {
matches!(
x.1,

41
crates/nu-cli/src/completions/completer.rs
View File

@ -111,11 +111,18 @@ impl NuCompleter {
}
fn completion_helper(&mut self, line: &str, pos: usize) -> Vec<Suggestion> {
// pos: is the position of the cursor in the shell input.
// e.g. lets say you have an alias -> `alias ll = ls -l` and you type in the shell:
// > ll -a | c
// and your cursor is right after `c` then `pos` = 9
let mut working_set = StateWorkingSet::new(&self.engine_state);
let offset = working_set.next_span_start();
let mut offset = working_set.next_span_start();
let (mut new_line, alias_offset) = try_find_alias(line.as_bytes(), &working_set);
let initial_line = line.to_string();
let alias_total_offset: usize = alias_offset.iter().sum();
// new_line: vector containing all alias "translations" so if it was `ll` now is `ls -l`.
// alias_offset:vector the offset between the name and the alias)
let initial_line = line.to_string(); // Entire line in the shell input.
let alias_total_offset: usize = alias_offset.iter().sum(); // the sum of all alias offsets.
new_line.insert(alias_total_offset + pos, b'a');
let pos = offset + pos;
let config = self.engine_state.get_config();
@ -156,14 +163,22 @@ impl NuCompleter {
most_left_variable(flat_idx, &working_set, flattened.clone());
// Create a new span
let new_span = if flat_idx == 0 {
Span::new(flat.0.start, flat.0.end - 1 - span_offset)
} else {
Span::new(
flat.0.start - span_offset,
flat.0.end - 1 - span_offset,
)
};
// if flat_idx == 0
let mut span_start = flat.0.start;
let mut span_end = flat.0.end - 1 - span_offset;
if flat_idx != 0 {
span_start = flat.0.start - span_offset;
span_end = flat.0.end - 1 - span_offset;
}
if span_end < span_start {
span_start = flat.0.start;
span_end = flat.0.end - 1;
offset += span_offset
}
let new_span = Span::new(span_start, span_end);
// Parses the prefix. Completion should look up to the cursor position, not after.
let mut prefix = working_set.get_span_contents(flat.0).to_vec();
@ -178,6 +193,10 @@ impl NuCompleter {
most_left_var.unwrap_or((vec![], vec![])),
);
if offset > new_span.start {
offset -= span_offset;
}
return self.process_completion(
&mut completer,
&working_set,

19
crates/nu-cli/tests/completions.rs
View File

@ -815,3 +815,22 @@ fn extern_complete_flags(mut extern_completer: NuCompleter) {
let expected: Vec<String> = vec!["--foo".into(), "-b".into(), "-f".into()];
match_suggestions(expected, suggestions);
}
#[rstest]
fn alias_offset_bug_7748() {
let (dir, _, mut engine, mut stack) = new_engine();
// Create an alias
let alias = r#"alias ea = ^$env.EDITOR /tmp/test.s"#;
assert!(support::merge_input(alias.as_bytes(), &mut engine, &mut stack, dir.clone()).is_ok());
let mut completer = NuCompleter::new(std::sync::Arc::new(engine), stack);
// Issue #7748
// Nushell crashes when an alias name is shorter than the alias command
// and the alias command is a external command
// This happens because of offset is not correct.
// This crashes before PR #7779
let _suggestions = completer.complete("e", 1);
//println!(" --------- suggestions: {:?}", suggestions);
}