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<H2>Issue REQUIRE-PATHNAME-DEFAULTS-AGAIN Writeup</H2>
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<PRE><B>Issue:</B> <A HREF="iss294.htm">REQUIRE-PATHNAME-DEFAULTS-AGAIN</A><P>
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<B>Forum:</B> X3J13<P>
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<B>References:</B> <A REL=DEFINITION HREF="../Body/f_provid.htm#provide"><B>PROVIDE</B></A>, <A REL=DEFINITION HREF="../Body/f_provid.htm#require"><B>REQUIRE</B></A>, <A REL=DEFINITION HREF="../Body/v_module.htm#STmodulesST"><B>*MODULES*</B></A> (all on CLtL1 p188),<P>
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Issue <A HREF="iss296.htm">REQUIRE-PATHNAME-DEFAULTS</A><P>
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<B>Category:</B> CHANGE<P>
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<B>Edit history:</B> 05-Feb-92, Version 1 by Pitman<P>
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<B>Status:</B> Approved by X3J13 on vote of 9-0-1 at December 1991 meeting<P>
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<P>
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<B>Problem Description:<P>
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</B><P>
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<A REL=DEFINITION HREF="../Body/f_provid.htm#require"><B>REQUIRE</B></A>, <A REL=DEFINITION HREF="../Body/f_provid.htm#provide"><B>PROVIDE</B></A>, and <A REL=DEFINITION HREF="../Body/v_module.htm#STmodulesST"><B>*MODULES*</B></A> were flushed but are still used by many <P>
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Common Lisp programs. Many in the user community have expressed dismay.<P>
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<P>
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<B>Proposal (REQUIRE-PATHNAME-DEFAULTS-AGAIN:X3J13-DEC-91):<P>
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</B><P>
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Return <A REL=DEFINITION HREF="../Body/f_provid.htm#require"><B>REQUIRE</B></A>, <A REL=DEFINITION HREF="../Body/f_provid.htm#provide"><B>PROVIDE</B></A>, and <A REL=DEFINITION HREF="../Body/v_module.htm#STmodulesST"><B>*MODULES*</B></A> to the language,<P>
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as described in CLtL1, except for the following changes:<P>
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<P>
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1. Remove the second argument to <A REL=DEFINITION HREF="../Body/f_provid.htm#require"><B>REQUIRE</B></A>.<P>
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<P>
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2. Deprecate all three functions.<P>
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<P>
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3. If any intervening cleanups have been passed and <P>
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would have referred to these functions (other than the cleanups<P>
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that removed them, of course), those cleanups would apply.<P>
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<P>
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<B>Rationale:<P>
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</B><P>
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This diminishes the compatibility problems caused by previous votes.<P>
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<P>
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1. The second argument is what was problematic, so remove only that.<P>
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<P>
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2. All of these functions are questionable to some committee members,<P>
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but deprecation allows for a suitable transition period for people to<P>
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find something better.<P>
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<P>
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3. We have said that the original CLtL1 wording is reinstated,<P>
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and we don't believe there are any cleanups which are in conflict,<P>
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but if one is later discovered to be in conflict, we want to give<P>
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precedence to the cleanup, not to CLtL1.<P>
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<P>
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<B>Test Case:<P>
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</B><P>
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(<A REL=DEFINITION HREF="../Body/f_provid.htm#provide"><B>PROVIDE</B></A> '<A REL=DEFINITION HREF="../Body/v_module.htm#STmodulesST"><B>*MODULES*</B></A>)<P>
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(<A REL=DEFINITION HREF="../Body/f_provid.htm#require"><B>REQUIRE</B></A> '<A REL=DEFINITION HREF="../Body/v_module.htm#STmodulesST"><B>*MODULES*</B></A>)<P>
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<P>
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<B>Current Practice:<P>
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</B><P>
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No previously-conforming implementation could have had these functions.<P>
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Some implementations (e.g., Genera) were continuing to <A REL=DEFINITION HREF="../Body/f_provid.htm#provide"><B>provide</B></A> these <P>
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functions but in a different package.<P>
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<P>
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<B>Cost to Implementors:<P>
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</B><P>
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Very small, and highly localized.<P>
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<P>
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<B>Cost to Users:<P>
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</B><P>
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None.<P>
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<P>
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<B>Cost of Non-Adoption:<P>
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</B><P>
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Many users who have expressed the opinion that removing these things was<P>
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gratuitous would continue to be upset.<P>
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<P>
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<B>Benefits:<P>
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</B><P>
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Cost of non-adoption is avoided.<P>
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<P>
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<B>Editorial Impact:<P>
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</B><P>
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A modular change of relatively small nature. Just whatever it takes to<P>
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dredge up the old text and dust it off for current editorial style, etc.,<P>
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make it conform to changes cited in the proposal.<P>
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<P>
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<B>Aesthetics:<P>
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</B><P>
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Some users believe that <A REL=DEFINITION HREF="../Body/f_provid.htm#provide"><B>PROVIDE</B></A> and <A REL=DEFINITION HREF="../Body/f_provid.htm#require"><B>REQUIRE</B></A> are aethetic.<P>
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<P>
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<B>Discussion:<P>
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</B><P>
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None.<P>
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</PRE>
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