在tclsh中,[tab]将自动执行已定义的proc(使用tclreadline)。

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英文:

In tclsh, [tab] will automatically execute the defined proc (with tclreadline)

问题

以下是您要翻译的部分:

my_tcl 7 % proc test args {puts "wwwww"} 
my_tcl 8 % test [tab]wwwww
wwwww
[tab]
wwwww
wwwww

.gitignore README.md .vscode/  ...

my_tcl 8 % test 

"After two tabs the proc runs four times and then returns to the position before the tab.
How should I avoid this problem?"

英文:
my_tcl 7 % proc test args {puts "wwwww"} 
my_tcl 8 % test [tab]wwwww
wwwww
[tab]
wwwww
wwwww

.gitignore README.md .vscode/  ...

my_tcl 8 % test 

After two tabs the proc runs four times and then returns to the position before the tab.
How should I avoid this problem?

答案1

得分: 1

这部分内容的中文翻译如下:

原来,tclreadline内置完成处理程序执行脚本定义的过程来搜索子命令或合奏命令。然而,在存在捕获所有 args 的情况下,这只会在此“完成”尝试期间执行该过程:

观察:

tclsh8.6 [/tmp] proc test {a b c} {puts "www"}
tclsh8.6 [/tmp] test[TAB] 
<a>
tclsh8.6 [/tmp] proc test {args} {puts "www"}
tclsh8.6 [/tmp] test[TAB] www
www

目前,避免只在形式参数规范中使用“args”的过程。您可能想要提交一个问题报告。应该正确处理“args”情况。(我的直觉是完成服务应该只使用“info”内省来查找过程,而不是探索子命令或合奏命令,只有在像cget、configure等命令需要执行时才需要。)

英文:

It turns out that tclreadline's built-in completion handler executes script-defined procs to search for sub- or ensemble commands. However, in presence of the catch-all args, this will simply execute the proc during this "completion" attempt:

Watch:

tclsh8.6 [/tmp] proc test {a b c} {puts &quot;www&quot;}
tclsh8.6 [/tmp] test[TAB] 
&lt;a&gt;
tclsh8.6 [/tmp] proc test {args} {puts &quot;www&quot;}
tclsh8.6 [/tmp] test[TAB] www
www

For now, avoid procs with only "args" in their formal parameter spec. You might want to file a ticket . The "args" case should be handled properly. (My gut feeling is that the completion service should only use "info" introspection for procs, without exploring for sub- or ensemble commands, with execution only necessary for commands like cget, configure etc.)

答案2

得分: 0

根据 @mrcalvin 的回答,我尝试通过完成自动完成函数来解决这个问题,而且成功了!


对于 proc test [tab] 将不再执行它。
英文:

Based on @mrcalvin's answer, I tried to solve this problem by completing the auto-completion function, and it worked!

namespace eval tclreadline { proc complete(test) {text start end line pos mod} {return} }

For proc test [tab] will no longer execute it.

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  • 本文由 发表于 2023年4月13日 16:34:19
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