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104 lines
3.8 KiB
Markdown
104 lines
3.8 KiB
Markdown
# Pay Respects
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Typed a wrong command? Pay Respects will try to correct your wrong console command simply by pressing `F`!
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## How to Pay Respects
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The binary is named `pay-respects`, by adding an alias to your shell
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configuration:
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``` shell
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# Note: You may need to have the binary exposed in your path
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alias f="$(pay_respects <your_shell_here>)"
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# for example, using `zsh`:
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alias f="$(pay_respects zsh)"
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# for `nushell`, the alias can be added automatically with:
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pay_respects nushell
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```
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You can now **press `F` to Pay Respects**!
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Currently, only corrections to `bash`, `zsh`, and `fish` are working flawlessly.
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`nushell` has broken aliases, therefore it has following 2 limitations:
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- You have to manually add the output of `pay_respects nushell` to your configuration as alias
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- Aliased commands cannot be expanded to their original command
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## Installing
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If you are using Arch Linux, you can install from AUR directly:
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```shell
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paru -S pay_respects
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```
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Alternatively, you can download Linux binary from [releases](https://github.com/iffse/pay_respects/releases).
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Otherwise, you can use cargo to compile the project:
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```
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cargo build --release
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```
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and the binary can be found at `target/release/pay_respects`.
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## Rule Files
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Rule files are parsed at compilation. Everything in rule files is converted to Rust code before compiling.
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Syntax of a rule file (placed under [rules](./rules)):
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```toml
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# this field should be the name of the command
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command = "world"
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# you can add as many `[[match_err]]` section as you want
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[[match_err]]
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# the suggestion of this section will be used for the following patterns of the error output
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# note that the error is formatted to lowercase without extra spaces
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pattern = [
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"pattern 1",
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"pattern 2",
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]
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# this will change the first argument to `fix`, while keeping the rest intact
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suggest = [ "{{command[0]}} fix {{command[2:]}}" ]
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[[match_err]]
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pattern = [
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"pattern 1",
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]
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# this will add a `sudo` before the command if:
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# - the `sudo` is found by `which`
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# - the last command does not contain `sudo`
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suggest = [
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'''
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#[executable(sudo), !cmd_contains(sudo)]
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sudo {{command}}'''
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]
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```
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The placeholder is evaluated as following:
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- `{{command}}`: All the command without any modification
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- `{{command[1]}}`: The first argument of the command (the command itself has index of 0)
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- `{{command[2:5]}}`: The second to fifth arguments. If any of the side is not specified, them it defaults to the start (if it is left) or the end (if it is right).
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- `{{typo[2](fix1, fix2)}}`: This will try to change the second argument to candidates in the parenthesis. The argument in parentheses must have at least 2 values. Single arguments are reserved for specific matches, for instance, `path` to search all commands found in the `$PATH` environment, or the `{{shell}}` placeholder, among others.
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- `{{opt::<Regular Expression>}}`: Optional patterns that are found in the command with RegEx (see RegEx crate for syntax). Note that all patterns matching this placeholder will not take a place when indexing.
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- `{{err::<Regular Expression}}`: Get the matching patterns from the error message.
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- `{{shell(<shell commands>)}}`: Replace with the output of the shell command. This placeholder can be used along `{{typo}}` as its only argument, where each newline will be evaluated to a candidate.
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The suggestion can have additional conditions to check. To specify the conditions, add a `#[...]` at the first line (just like derive macros in Rust). Available conditions:
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- `executable`: Check if the argument can be found by `which`
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- `cmd_contains`: Check if the last user input contains the argument
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- `err_contains`: Check if the error of the command contains the argument
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## Current Progress
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We need more rule files!
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