diff options
| -rw-r--r-- | lisp/subr.el | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/lisp/subr.el b/lisp/subr.el index fba837212d..bc97a36721 100644 --- a/lisp/subr.el +++ b/lisp/subr.el @@ -2167,9 +2167,10 @@ arguments with the same names of function `replace-match'. If START is non-nil, start replacements at that index in STRING. REP is either a string used as the NEWTEXT arg of `replace-match' or a -function. If it is a function it is applied to each match to generate -the replacement passed to `replace-match'; the match-data at this -point are such that match 0 is the function's argument. +function. If it is a function, it is called with the actual text of each +match, and its value is used as the replacement text. When REP is called, +the match-data are the result of matching REGEXP against a substring +of STRING. To replace only the first match (if any), make REGEXP match up to \\' and replace a sub-expression, e.g. |