通过 PuTTY 在 Rails 控制台中的命令历史记录 [英] command history in Rails console over PuTTY

问题描述

在 Rails 2.3.12 中通过 PuTTY 使用脚本/控制台.当我按向上"箭头访问我写的最后一个命令时，它不会调出命令，而是将奇怪的字符串^[[A"打印到终端.与其他箭头相同……向后箭头打印^[[D"，向前箭头打印^[[C"

Using script/console in rails 2.3.12 over PuTTY. When I press the "up" arrow to access the last command I wrote, instead of bringing up the command it just prints the weird string "^[[A" to the terminal. Same with other arrows...back arrow prints "^[[D" and forward arrow prints "^[[C"

希望有人认出这些奇怪的代码，并可能告诉我如何让箭头正常工作.这是 PuTTY 设置问题吗?

Hoping somebody recognizes these weird codes, and can possibly tell me how to get the arrows working properly. Is this a PuTTY settings issue?

推荐答案

向上箭头功能由 阅读线.通常，在构建 ruby​​ 时，./configure 会自动检测 readline 库并为它们构建 ruby​​ 映射.有时这不起作用，您必须在构建 ruby​​ 时安装新库或自定义配置 --with-readline-dir.irb 和 rails-console 仅使用 ruby​​ stdlib 的 readline 功能，所以您的问题很可能是您的 ruby​​ 构建没有检测和绑定 readline.

The up-arrow functionality is supplied by readline. Typically, when ruby is built, ./configure auto-detects the readline libraries and builds ruby mappings to them. Sometimes this doesn't work and you have to install new libraries or custom configure --with-readline-dir when building ruby. irb and rails-console just use the readline capability of the ruby stdlib, soyour problem is likely that your ruby build didn't detect and bind readline.

我建议您调查与使用 readline 构建 ruby​​ 相关的其他 SO 问题看看其中一个是否为您提供了有关您的 ruby​​ 版本和操作系统的指导.

I suggest you survey the other SO questions relevant to building ruby with readline to see if one of them gives you guidance for your version of ruby and your OS.

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