[binutils-gdb] GDB/doc: Document the Guile `#:unlimited' keyword

[Maciej W. Rozycki <macro@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=7b0d7ede79f548915641ac5916fbeb77fc9c44ff

commit 7b0d7ede79f548915641ac5916fbeb77fc9c44ff
Author: Maciej W. Rozycki <macro@embecosm.com>
Date:   Thu Sep 1 11:30:18 2022 +0100

    GDB/doc: Document the Guile `#:unlimited' keyword
    
    Document the Guile `#:unlimited' keyword and deprecate the internal
    integer representation it corresponds to for integer parameters.

Diff:
---
 gdb/doc/guile.texi | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/gdb/doc/guile.texi b/gdb/doc/guile.texi
index 63916eed181..ba916009f74 100644
--- a/gdb/doc/guile.texi
+++ b/gdb/doc/guile.texi
@@ -2135,8 +2135,9 @@ Guile, true and false are represented using boolean constants, and
 @samp{auto} is represented using @code{#:auto}.
 
 @item PARAM_UINTEGER
-The value is an unsigned integer.  The value of 0 should be
-interpreted to mean ``unlimited''.
+The value is an unsigned integer.  The value of @code{#:unlimited}
+should be interpreted to mean ``unlimited'', and the value of @samp{0}
+is reserved and should not be used.
 
 @item PARAM_ZINTEGER
 The value is an integer.
@@ -2145,9 +2146,10 @@ The value is an integer.
 The value is an unsigned integer.
 
 @item PARAM_ZUINTEGER_UNLIMITED
-The value is an integer in the range @samp{[0, INT_MAX]}.
-A value of @samp{-1} means ``unlimited'', and other negative
-numbers are not allowed.
+The value is an integer in the range @samp{[0, INT_MAX]}.  The value
+of @code{#:unlimited} means ``unlimited'', the value of @samp{-1} is
+reserved and should not be used, and other negative numbers are not
+allowed.
 
 @item PARAM_STRING
 The value is a string.  When the user modifies the string, any escape