Stuck When Switching Input Method Using Im-select

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Introduction

When using the im-select tool to switch input methods, some users have reported experiencing issues with WezTerm, a terminal emulator, becoming stuck. This problem has been observed on Windows operating systems, specifically with the WezTerm nightly version. In this article, we will delve into the details of this issue, explore the possible causes, and discuss potential solutions.

Problem Description

The im-select tool is a command-line interface (CLI) tool designed for input method switching, utilizing Windows API to switch input methods. However, when using the "im-select 2052" command to switch input methods with the WezTerm nightly version, the terminal emulator becomes stuck.

Reproduction Steps

To reproduce this issue, follow these steps:

  1. Install the im-select tool.
  2. Enable two or more languages in the Windows settings, such as Chinese and English.
  3. Open WezTerm using the minimal wezterm.lua configuration file, enabling the WebGPU front-end.
  4. Use the im-select tool to switch the input method to Chinese by running the command im-select.exe 2052.

Configuration

The WezTerm configuration file (wezterm.lua) contains the following code:

return {
   front_end = 'WebGpu',
}

Expected Behavior

The expected behavior is that WezTerm should not become stuck when switching input methods using the im-select tool.

Logs

No logs are generated when this issue occurs.

Additional Information

The user has reported that this issue is not present in the last stable release of WezTerm. Additionally, the user has some AutoHotkey (AHK) scripts related to switching input methods, which also cause WezTerm to become stuck.

AHK Scripts

The AHK scripts used for switching input methods are as follows:

setKBLlLayout(KBL:=0,Source:=0) { ; 设置输入法键盘布局
	AutoSwitchFrequency += Source
	gl_Active_IMEwin_id := getIMEwinid()
	CapsLockState := LastCapsState
	If !WinActive("ahk_group Inner_AHKGroup_NoCapsLock") { ; 设置大小写
		Switch Reset_CapsLock_State
		{
			Case 1: SetCapsLockState, Off
			Case 2: SetCapsLockState, On
		}
		If (Reset_CapsLock_State>0)
			CapsLockState := Reset_CapsLock_State-1
	}
	LastKBLCode := getIMEKBL(gl_Active_IMEwin_id)
	If (KBL=0){ ; 切换中文输入法
		If (LastKBLCode=CN_Code){
			setIME(1,gl_Active_IMEwin_id)
		}Else{
			SendMessage, 0x50, , %CN_Code%, , ahk_id %gl_Active_IMEwin_id%,,,,1000
			Sleep,50
			setIME(1,gl_Active_IMEwin_id)
		}
	}Else If (KBL=1){ ; 切换英文(中文)输入法
		If (LastKBLCode=CN_Code){
			setIME(0,gl_Active_IMEwin_id)
		}Else{
			SendMessage, 0x50, , %CN_Code%, , ahk_id %gl_Active_IMEwin_id%,,,,1000
			Sleep,50
			setIME(0,gl_Active_IMEwin_id)
		}
	}Else If (KBL=2){ ; 切换英文输入法
		If (LastKBLCode!=EN_Code)
			PostMessage, 0x50, , %EN_Code%, , ahk_id %gl_Active_IMEwin_id%
	}
	try showSwitch(KBL,CapsLockState,1)
	SetTimer, Label_Change_TrayTip, -1000
}

setIME(setSts, win_id:="") { ; 设置输入法状态-获取状态-末位设置
	SendMessage 0x283, 0x001, 0, , ahk_id %win_id%,,,,1000
	CONVERSIONMODE := 2046&ErrorLevel, CONVERSIONMODE += setSts
    SendMessage 0x283, 0x002, CONVERSIONMODE, , ahk_id %win_id%,,,,1000
    SendMessage 0x283, 0x006, setSts, , ahk_id %win_id%,,,,1000
    Return ErrorLevel
}

Conclusion

Q: What is the im-select tool?

A: The im-select tool is a command-line interface (CLI) tool designed for input method switching, utilizing Windows API to switch input methods.

Q: What is the issue with WezTerm and im-select?

A: When using the "im-select 2052" command to switch input methods with the WezTerm nightly version, the terminal emulator becomes stuck.

Q: What are the reproduction steps for this issue?

A: To reproduce this issue, follow these steps:

  1. Install the im-select tool.
  2. Enable two or more languages in the Windows settings, such as Chinese and English.
  3. Open WezTerm using the minimal wezterm.lua configuration file, enabling the WebGPU front-end.
  4. Use the im-select tool to switch the input method to Chinese by running the command im-select.exe 2052.

Q: What is the expected behavior?

A: The expected behavior is that WezTerm should not become stuck when switching input methods using the im-select tool.

Q: Are there any logs generated when this issue occurs?

A: No logs are generated when this issue occurs.

Q: Is this issue present in the last stable release of WezTerm?

A: No, this issue is not present in the last stable release of WezTerm.

Q: Are there any AHK scripts related to switching input methods that also cause WezTerm to become stuck?

A: Yes, the user has some AutoHotkey (AHK) scripts related to switching input methods, which also cause WezTerm to become stuck.

Q: What are the AHK scripts used for switching input methods?

A: The AHK scripts used for switching input methods are as follows:

setKBLlLayout(KBL:=0,Source:=0) { ; 设置输入法键盘布局
	AutoSwitchFrequency += Source
	gl_Active_IMEwin_id := getIMEwinid()
	CapsLockState := LastCapsState
	If !WinActive("ahk_group Inner_AHKGroup_NoCapsLock") { ; 设置大小写
		Switch Reset_CapsLock_State
		{
			Case 1: SetCapsLockState, Off
			Case 2: SetCapsLockState, On
		}
		If (Reset_CapsLock_State>0)
			CapsLockState := Reset_CapsLock_State-1
	}
	LastKBLCode := getIMEKBL(gl_Active_IMEwin_id)
	If (KBL=0){ ; 切换中文输入法
		If (LastKBLCode=CN_Code){
			setIME(1,gl_Active_IMEwin_id)
		}Else{
			SendMessage, 0x50, , %CN_Code%, , ahk_id %gl_Active_IMEwin_id%,,,,1000
			Sleep,50
			setIME(1,gl_Active_IMEwin_id)
		}
	}Else If (KBL=1){ ; 切换英文(中文)输入法
		If (LastKBLCode=CN_Code){
			setIME(0,gl_Active_IMEwin_id)
		}Else{
			SendMessage, 0x50, , %CN_Code%, , ahk_id %gl_Active_IMEwin_id%,,,,1000
			Sleep,50
			setIME(0,gl_Active_IMEwin_id)
		}
	}Else If (KBL=2){ ; 切换英文输入法
		If (LastKBLCode!=EN_Code)
			PostMessage, 0x50, , %EN_Code%, , ahk_id %gl_Active_IMEwin_id%
	}
	try showSwitch(KBL,CapsLockState,1)
	SetTimer, Label_Change_TrayTip, -1000
}

setIME(setSts, win_id:="") { ; 设置输入法状态-获取状态-末位设置
	SendMessage 0x283, 0x001, 0, , ahk_id %win_id%,,,,1000
	CONVERSIONMODE := 2046&ErrorLevel, CONVERSIONMODE += setSts
    SendMessage 0x283, 0x002, CONVERSIONMODE, , ahk_id %win_id%,,,,1000
    SendMessage 0x283, 0x006, setSts, , ahk_id %win_id%,,,,1000
    Return ErrorLevel
}

Q: What is the recommended solution for this issue?

A: To resolve this issue, it is recommended to try the latest nightly build of WezTerm and to investigate the im-select tool and AHK scripts further.

Q: Are there any other potential causes for this issue?

A: Yes, there may be other potential causes for this issue, such as conflicts between the im-select tool and AHK scripts, or issues with the WezTerm configuration file. Further investigation is required to determine the root cause of this issue.