GNU FORTH 有编辑器吗？

Question

Starting FORTH 的第 3 章说，

Now that you've made a block "current", you can list it by simply typing the word L. Unlike LIST, L does not want to be proceeded by a block number; instead it lists the current block.

当我运行180 LIST时，我得到

Screen 180 not modified     
0                                                                 
...                                                             
15                                                                 
 ok

但是当我运行L时，我得到一个错误

:30: Undefined word
>>>L<<<
Backtrace:
F0876E99A68 throw 
F0876EAFDE0 no.extensions 
F0876E99D28 interpreter-notfound1 

我做错了什么？

Answer 1

原来这些是"Editor Commands"书上说的，

For Those Whose EDITOR Doesn't Follow These Rules

The FORTH-79 Standard does not specify editor commands. Your system may use a different editor; if so, check your systems documentation

我认为 gforth 根本不支持内部编辑器。所以L、T、I、P、F、E、D、R都是大概不受支持。

Answer 2

不，GNU Forth 没有内部编辑器；我用 Vim :)

Answer 3

gforth 与 emacs 很好地集成在一起。在我的 xemacs 中，默认情况下，任何名为 *.fs 的文件都被视为 FORTH 源。 "C-h m"，像往常一样，给出可用的命令。

Answer 4

是的，gForth 支持内部 (BLOCK) 编辑器。开始前进

1. 类型：use blocked.fb（演示页面）
2. 类型：1 load
3. 输入editor

4. words会显示编辑器字样，

   s b n bx nx qx dl il f y r d i t 'par 'line 'rest c a m  ok
   

5. 键入 0 l 以列出描述编辑器的屏幕 0，

   Screen 0 not modified     
    0 \ some comments on this simple editor                 29aug95py
    1 m marks current position        a goes to marked position       
    2 c moves cursor by n chars       t goes to line n and inserts    
    3 i inserts                       d deletes marked area           
    4 r replaces marked area          f search and mark               
    5 il insert a line                dl delete a line                
    6 qx gives a quick index          nx gives next index             
    7 bx gives previous index                                         
    8 n goes to next screen           b goes to previous screen       
    9 l goes to screen n              v goes to current screen        
   10 s searches until screen n       y yank deleted string           
   11                                                                 
   12 Syntax and implementation style a la PolyFORTH                  
   13 If you don't like it, write a block editor mode for Emacs!      
   14                                                                 
   15                                                                 
    ok
   

创建您自己的块文件

创建您自己的新块文件myblocks.fb

1. 类型：use blocked.fb
2. 类型：1 load
3. 输入editor

然后

1. 输入use myblocks.fb
2. 1 load 将显示 BLOCK #1（第 0 行到第 15 行。16 行，每行 64 个字符）
3. 1 t 将突出显示第 1 行
4. 键入 i this is text 以 [i] 插入第 1 行
5. 编辑当前块后键入 flush 以便将块 #1 写入文件 myblocks.fb

有关详细信息，请参阅 gForth Blocks