如何使键绑定在gnuplot哑终端中工作? [英] How to get key bind to work in gnuplot dumb terminal?

问题描述

我试图在文本终端 dumb 中实现绘图循环.为了停止循环，我正在使用 bind (请检查 help bind ).这可以正常工作，例如在 wxt 终端中，但是，在使用 dumb 终端时循环不会停止.

I tried to implement a plotting loop in the text terminal dumb. In order to stop the loop I'm using bind (check help bind). This works fine, e.g. in a wxt terminal, however, the loop will not stop when using the dumb terminal.

我知道我可以通过按 Ctrl + C 来停止循环，但是似乎没有任何可能的键绑定.为什么是这样?解决方法?

I know that I could stop the loop by pressing Ctrl+C, however, it looks like no key bindings seem to be possible. Why is this? How to workaround?

代码:

### key bind in dumb terminal?
reset session
set term dumb 120,30

# random plot
set samples 20
plot '+' u 1:(rand(0)) w l ti strftime("%d.%m.%Y\n%H:%M:%S",time(0))

stop = 0
bind x "stop = 1"

while !stop {
    pause 1.5     # delay in seconds
    replot
}
### end of code

结果:(但不会像在 wxt 终端中那样按 x 来停止循环)

Result: (but loop will not stop by pressing x as it would in a wxt terminal)

    1 +---------------------------------------------------------------------+   
      |                 +                +                 +                |   
      |                       ***                        24.02.2021 ******* |   
  0.9 |-+                   **  *                        10:40:46         +-|   
      |                     *    *                                          |   
  0.8 |-+                  *     *                           *            +-|   
      |      ****          *     *           ***             *              |   
      |      *   *         *      *        **  *             **             |   
  0.7 |-+    *   *        *       *        *   *             **           +-|   
      |     *     *       *       *       *     *           *  *            |   
  0.6 |-+   *     *      *        *       *     *           *  *          +-|   
      |     *      *     *         *     *      *           *   *           |   
      |     *      *     *         **    *      *           *   *           |   
  0.5 |*+   *       *   *            ** *        *          *    *        +-|   
      |*    *       *   *               *        *    *     *    *          |   
      |*   *         ***               *         *   **    *     *         *|   
  0.4 |-*  *         *                           *   * *   *      *       +*|   
      | *  *                                     *  *  *   *      *        *|   
  0.3 |-+* *                                      **    *  *       *      *-|   
      |  * *                                      **    *  *       *      * |   
      |  **                                       *     *  *       *      * |   
  0.2 |-+ *                                              **         *    *+-|   
      |   *                                              **         *    *  |   
  0.1 |-+                                                 *          *   *+-|   
      |                                                   *          ****   |   
      |                 +                +                 +            *   |   
    0 +---------------------------------------------------------------------+   
     -10               -5                0                 5                10  
     

推荐答案

我认为这行不通.从 help bind :

请注意，只有当gnuplot是在具有鼠标支持的情况下编译的，并且所有具有鼠标功能的终端都使用时， bind 才可用.>

Note that bind is only available if gnuplot was compiled with mouse support and it is used by all mouse-capable terminals.

据我了解， dumb 终端并不意味着是交互式的.因此，它不是具有鼠标能力"的.并且不会对鼠标操作或按键动作做出反应.

As far as I understand, the dumb terminal is not meant to be interactive. Therefore it is not "mouse-capable" and does not react on mouse actions or key strokes.

源文件 dumb.trm 中包含行

   #ifdef USE_MOUSE
      , NULL, NULL, NULL, NULL, NULL

(我认为)支持我的假设:即使您的gnuplot版本具有通用的鼠标支持，在 dumb 终端中也无法使用 bind .

which (I think) supports my assumption: Even if your gnuplot version has general mouse support, bind can't be used within the dumb terminal.

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