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Add documentation for string replacement length limitation

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Documented that for string objects, the replacement text must have the
same length as the original matched text due to store-substring limitations.

Co-authored-by: Kinneyzhang <38454496+Kinneyzhang@users.noreply.github.com>
This commit is contained in:
copilot-swe-agent[bot] 2025-12-15 09:03:15 +00:00
parent 0b0bfedc6b
commit 798c88e559
1 changed files with 17 additions and 0 deletions
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tp.el
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@ -1101,6 +1101,11 @@ OBJECT can be a buffer or string; nil defaults to current buffer.
Returns the number of successful matches.
Note: For string objects, the replacement text must have the same length
as the original matched text, since strings have fixed length in Emacs.
If the replacement is shorter, only that portion will be replaced.
If the replacement is longer, it will be truncated.
Example:
;; Upcase all matched text
(tp-forward-do #\\='upcase \\='marker nil my-string 3)"
@ -1115,6 +1120,7 @@ Example:
(when (and new-text (not (equal new-text text)))
(if (stringp obj)
;; For strings, we need to replace in-place
;; Note: store-substring has length restrictions
(progn
(store-substring obj start new-text))
;; For buffers, delete and insert
@ -1165,6 +1171,11 @@ OBJECT can be a buffer or string; nil defaults to current buffer.
Returns the number of successful matches.
Note: For string objects, the replacement text must have the same length
as the original matched text, since strings have fixed length in Emacs.
If the replacement is shorter, only that portion will be replaced.
If the replacement is longer, it will be truncated.
Example:
;; Upcase all matched text
(tp-backward-do #\\='upcase \\='marker nil my-string 3)"
@ -1179,6 +1190,7 @@ Example:
(when (and new-text (not (equal new-text text)))
(if (stringp obj)
;; For strings, we need to replace in-place
;; Note: store-substring has length restrictions
(progn
(store-substring obj start new-text))
;; For buffers, delete and insert
@ -1308,6 +1320,11 @@ of FUNCTION replaces the matched text in the string or buffer.
Returns the number of matches processed.
Note: For string objects, the replacement text must have the same length
as the original matched text, since strings have fixed length in Emacs.
If the replacement is shorter, only that portion will be replaced.
If the replacement is longer, it will be truncated.
Example:
;; Upcase all matched text
(tp-search-map #\\='upcase my-string \\='marker)"