Documentation
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Overview ¶
Package patch is the exact-match text editor behind `codeaf patch`: one old text in, the file with its single occurrence replaced out.
The law it keeps is the edit hand's (internal/exec/bare), which cannot be imported from here: an exact match is counted in line-ending-normalized space, so a caller who typed their old text with the endings their terminal shows still edits a CRLF file, and a replacement is refused rather than guessed at when the text matches nothing or matches several places at once. A shell has no model to ask for more context, so the refusals name the count — "found 3 matches" is something a person can act on, and a silent first-match replacement is not.
Index ¶
Constants ¶
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Variables ¶
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Functions ¶
func Apply ¶
Apply replaces the ONE occurrence of oldText in content with newText.
Matching is exact after three normalizations the edit hand also makes: a leading byte-order mark is set aside (a shell will not include one in the text it passes), every line ending is folded to LF (so LF text edits a CRLF file), and the replacement is written back with the file's own ending. The match is a plain substring count after that folding — no fuzzy fallback, because a person typing a patch into a shell wants either the edit they described or a refusal, and a "close enough" match would apply the wrong one.
The returned error carries the count when the match is not exactly one: none, or two or more. Content is only returned when the edit was made.
Types ¶
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Source Files