Make 2001/anonymous.c use original macros

There is one exception that I'm aware of and that is the U macro (U is
referenced only in strings) and this is because it segfaulted and it was
a minor change so didn't seem worth investigating further, at least for
now (if not for ever).

This feels like a new pull request is appropriate here so although it's
technically the same idea of the previous pull request this is what
should be the final revision (again unless I figure out why U
segfaulted).

2001/anonymous/README.md

@@ -22,12 +22,12 @@ author's remarks it should be executed). He managed to do this with linux
 but it will not work with macOS (see [bugs.md](/bugs.md) for why this is); this
 is not a bug but a feature inherent in what it does.
 
-Although it took a fair bit of debugging it turns out all that
-needed to be changed was:
+Although it took a fair bit of debugging it turns out all that had to change
+was:
 
-- `#include <sys/mman.h>` for `mmap()`.
-- have `main()` call another function which is the recursive function; this
-prevented `main()` from entering an infinite loop.
+- `#include <sys/mman.h>` for `mmap()` and `munmap()`.
+- have `main()` call another function which is no longer a recursive function;
+this prevented `main()` from entering an infinite recursive loop.
 
 Without either of these it would crash and prevent modification of the 32-bit
 [ELF](https://en.wikipedia.org/wiki/Executable_and_Linkable_Format) (not elf :-)
@@ -41,9 +41,13 @@ macOS and linux).
 
 There was one other thing that had to be done though. Since the program used to
 recursively call (infinite recursion, seemingly) `main()` and since that cannot
-be done what had to be done is first call `munmap()` and `close()` (else one
-would get text file busy error) and then run `execv()` again like the function
-`pain()` (was in `main()`) did but with a slight change.
+be done what had to be done instead is after the new function (`pain()` since it
+was a pain to fix :-) ) returns to first call `munmap()` and `close()` (else
+one would get text file busy error) and then the program can call `execv()` again like the
+function `pain()` (was in `main()`) did but with a slight change. See commit
+`2159caec4677e0f25ad704a74e04c8196fd6c343` for details. Notice that
+the location of the calls to `munmap()` and `close() followed by `execv()` do
+matter!
 
 NOTE: there might be educational value to see the progress of this fix; if you
 wish to see, try:

2001/anonymous/anonymous.c

@@ -41,7 +41,8 @@ c L(E(k [(l)V(17)]),0); } V(v){ c E(B[v]); }
 int
 pain(char *ck, char **k)
 {
-c (z?(stat(M,&t)?P+=a+'{'?0:3:execv(M,k),a=G,i=P,y=G&255,sprintf(Q,y/'@'-3?"*L(V(%d+%d)+%d,0)":"R[%d]",(y&7),'\r',y/0100-1?0:G),(a+127&&a+'}'&&a+1?(a+61&&a+24&&a+025?(P=a+'H'&&a%061<=0?P:i,D(a>0?"                           R[%d]=E(~-E(R[%d])),\0               U R[%d],\0               R[%d] O,\0                                          U %d,\0R[%d]=0,"+(a&'8')*3:a  <-  'c'?" %d, %c%s = R[%d], \0    %d, *R=%c%s==R[%d], \0          R[%d]=(int)%c%s,"-a%'w'%'j'*5:"%d,%d,%s=%d,",a>0?a-'h'?a-49?a&7:g:I:g,a>0?a&7:"& "[a%3%2+1],a+72?Q:A(*R),a>0|a<-99?g:I,0) ,(char* ) P):(P=i,i=a+61?a+21?E(I):G:0, D(a%' '+29+"P O,\0 U %d,P=%d,",P,P+i,0,0,0) , p(d,"A'",b)),z):(n=g-4?g%5-1?a+127?G:I:0:(Scan(), *( x86?processor :d)=0, (int)(ss+V(i))),g%5<2?d+=sprintf( d,g%5?"    %s=E(~-E(%s)), \0    U %s,"+4*g:"%s=E(E(%s)%c%d),",Q,Q,"+    -  "[g],n,0 ),(char* ) P:(a=G-'u'?'!':'=', D(g-4?"P=%d%c=%s?%d:%d,":"*R=E(((int(*)(l,l,l))%s)(K(1),K(2),K(3))),P O,",n,a,Q,P,P+G), p(d,"A'",b) ,z)))):(Run((z=(char*)&ck,stat(k[1],&t),B=(l)mmap(0,N=i=t.st_size,PROT_READ|PROT_WRITE,1,f=open(k[1],2),0))), magic((R[4]=E(B+i/4),run(),P=V(-~i),R[4]=E(V(17)-4),*(int*)V(021))), sprintf(M,A(.%s%d),k[1],P), D("%s %s '-DX=A(%s)' -o %s '-Dmagic=",X,__FILE__,X,M,fflush(0)) ,(char* ) P)); }
+c (z?(stat(M,&t)?P+=a+'{'?0:3:execv(M,k),a=G,i=P,y=G&255,sprintf(Q,y/'@'-3?"*L(V(%d+%d)+%d,0)":"R[%d]",(y&7),'\r',y/0100-1?0:G),(a+127&&a+'}'&&a+1?(a+61&&a+24&&a+025?(P=a+'H'&&a%061<=0?P:i,D(a>0?"                           R[%d]=E(~-E(R[%d])),\0               U R[%d],\0               R[%d] O,\0                                          U %d,\0R[%d]=0,"+(a&'8')*3:a  <-  'c'?" %d, %c%s = R[%d], \0    %d, *R=%c%s==R[%d], \0          R[%d]=(int)%c%s,"-a%'w'%'j'*5:"%d,%d,%s=%d,",a>0?a-'h'?a-49?a&7:g:I:g,a>0?a&7:"& "[a%3%2+1],a+72?Q:A(*R),a>0|a<-99?g:I,0) ,(char* ) P):(P=i,i=a+61?a+21?E(I):G:0, D(a%' '+29+"P O,\0 U %d,P=%d,",P,P+i,0,0,0) , p(d,"A'",b)),z):(n=g-4?g%5-1?a+127?G:I:0:(Scan(), *( x86?processor :d)=0, (int)(ss+V(i))),g%5<2?d+=sprintf( d,g%5?"    %s=E(~-E(%s)), \0    U %s,"+4*g:"%s=E(E(%s)%c%d),",Q,Q,"+    -  "[g],n,0 ),(char* ) P:(a=G-'u'?'!':'=', D(g-4?"P=%d%c=%s?%d:%d,":"*R=E(((int(*)(l,l,l))%s)(K(1),K(2),K(3))),P O,",n,a,Q,P,P+G), p(d,"A'",b) ,z)))):(Run((z=(char*)&ck,stat(k[1],&t),B=(l)mmap(0,N=i=t.st_size,PROT_READ|PROT_WRITE,1,f=open(k[1],2),0))), magic((R[4]=E(B+i/4),run(),P=V(-~i), R[4]=E(V(17)-4),*(int*)V(021))), sprintf(M,A(.%s%d),k[1],P), D("%s %s '-DX=A(%s)' -o %s '-Dmagic=",X,__FILE__,X,M,fflush(0)) ,(char* ) P));
+}
 int main (int cka, char **k) { char *ck = (char *)cka;
   (E((ck?pain((char*)cka,k):p(M,A(rm -f .%s),M),*R)));munmap(B,N);close(f);execv(k[1],k);
 }