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9ab5cda397
Shadowing core "I" is too messy. As soon as ed is loaded in memory, nothing else that isn't "i-aware" can be loaded anymore. I guess that's why "contexts" exist in Starting Forth, but adding this concept just for allowing the shadowing of core words seems overkill to me. Renaming I to i in ed seems better.
17 lines
741 B
Plaintext
17 lines
741 B
Plaintext
There are two buffers, IBUF (insert buffer) and FBUF (find
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buffer). They are used as a typing target for the actions
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described below. They both have a peculiar logic: when typing
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is expected to fill a buffer, an empty value means "reuse
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previous value". For example, typing "I foo I " inserts
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"foofoo".
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T ( n -- ): select line n for editing.
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P xxx: put typed IBUF on selected line.
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U xxx: insert typed IBUF on selected line.
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F xxx: find typed FBUF in block, starting from current
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position+1. If not found, don't move.
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i xxx: insert typed IBUF at cursor. "i" is to avoid shadowing
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core word "I".
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Y: Copy n characters after cursor into IBUF, n being length of
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FBUF. (cont.)
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