[PATCH 2/2] doc: Add documentation for `for-rdelim-in-port` and, related procedures.

From b271d059615571d0d50027758494b8dbb5e8625e Mon Sep 17 00:00:00 2001
From: AwesomeAdam54321 <[email protected]>
Date: Mon, 16 Dec 2024 22:55:41 +0800
Subject: [PATCH 2/2] doc: Add documentation for `for-rdelim-in-port` and
 related procedures.

* doc/ref/api-io.texi (for-rdelim-in-port): Document API.
(for-delimited-in-port): Likewise.
(for-line-in-file): Likewise.
---
 doc/ref/api-io.texi | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/doc/ref/api-io.texi b/doc/ref/api-io.texi
index 79bc9e9d6..23e316c27 100644
--- a/doc/ref/api-io.texi
+++ b/doc/ref/api-io.texi
@@ -984,6 +984,28 @@ used.  This procedure is equivalent to:
 @end lisp
 @end deffn
 
+@deffn {Scheme Procedure} for-rdelim-in-port port proc rdelim-proc @
+        [#:stop-pred=eof-object?]
+For every unit provided by @code{(rdelim-proc port)}, provide
+this unit(rdelim) to @var{proc} to be processed. This will continue throughout
+@var{port} until @var{stop-pred} returns @code{#t}.
+@var{stop-pred} is @code{eof-object?} by default.
+@var{rdelim-proc} has to advance through @var{port} with every call made to it.
+@end deffn
+
+@deffn {Scheme Procedure} for-delimited-in-port port proc @
+        [#:delims=''\n''] [#:handle-delim='trim]
+Call @var{proc} for every line delimited by @var{delims} in @var{port}.
+@end deffn
+
+@deffn {Scheme Procedure} for-line-in-file file proc @
+        [#:encoding=#f] [#:guess-encoding=#f]
+Call @var{proc} for every line in @var{file}.
+@var{file} must be a filename string.
+
+The line provided to @var{proc} is guaranteed to be a string.
+@end deffn
+
 @node Default Ports
 @subsection Default Ports for Input, Output and Errors
 @cindex Default ports
-- 
2.41.0