more error checking for hash builtin; fix for [[ builtin and some test syntax errors

doc/bashref.log

@@ -1,11 +1,12 @@
-This is pdfTeX, Version 3.141592653-2.6-1.40.22 (TeX Live 2021/MacPorts 2021.58693_0) (preloaded format=pdfetex 2021.8.30)  10 SEP 2023 17:14
+This is pdfTeX, Version 3.141592653-2.6-1.40.22 (TeX Live 2021/MacPorts 2021.58693_0) (preloaded format=pdfetex 2021.8.30)  13 SEP 2023 15:40
 entering extended mode
  restricted \write18 enabled.
  file:line:error style messages enabled.
  %&-line parsing enabled.
-**\input /usr/local/src/bash/bash-20230907/doc/bashref.texi
-(/usr/local/src/bash/bash-20230907/doc/bashref.texi
-(/usr/local/src/bash/bash-20230907/doc/texinfo.tex
+**\input /usr/local/src/bash/bash-20230911/doc/bashref.texi \input /usr/local/s
+rc/bash/bash-20230911/doc/bashref.texi
+(/usr/local/src/bash/bash-20230911/doc/bashref.texi
+(/usr/local/src/bash/bash-20230911/doc/texinfo.tex
 Loading texinfo [version 2015-11-22.14]:
 \outerhsize=\dimen16
 \outervsize=\dimen17
@@ -161,15 +162,15 @@ This is `epsf.tex' v2.7.4 <14 February 2011>
 texinfo.tex: doing @include of version.texi
 
 
-(/usr/local/src/bash/bash-20230907/doc/version.texi) [1{/opt/local/var/db/texmf
+(/usr/local/src/bash/bash-20230911/doc/version.texi) [1{/opt/local/var/db/texmf
 /fonts/map/pdftex/updmap/pdftex.map}] [2]
-(/usr/local/build/bash/bash-20230907/doc/bashref.toc [-1] [-2] [-3]) [-4]
-(/usr/local/build/bash/bash-20230907/doc/bashref.toc)
-(/usr/local/build/bash/bash-20230907/doc/bashref.toc) Chapter 1
+(/usr/local/build/bash/bash-20230911/doc/bashref.toc [-1] [-2] [-3]) [-4]
+(/usr/local/build/bash/bash-20230911/doc/bashref.toc)
+(/usr/local/build/bash/bash-20230911/doc/bashref.toc) Chapter 1
 \openout0 = `bashref.toc'.
 
 
-(/usr/local/build/bash/bash-20230907/doc/bashref.aux)
+(/usr/local/build/bash/bash-20230911/doc/bashref.aux)
 \openout1 = `bashref.aux'.
 
  Chapter 2 [1] [2]
@@ -229,7 +230,7 @@ Overfull \hbox (5.95723pt too wide) in paragraph at lines 724--725
  [49] [50] [51]
 [52] [53] [54] [55] [56] [57] [58] [59] [60] [61] [62] [63] [64] [65] [66]
 [67] [68]
-Overfull \hbox (38.26585pt too wide) in paragraph at lines 5407--5407
+Overfull \hbox (38.26585pt too wide) in paragraph at lines 5412--5412
  []@texttt set [-abefhkmnptuvxBCEHPT] [-o @textttsl option-name@texttt ] [--] [
 -] [@textttsl ar-gu-ment []@texttt ][] 
 
@@ -242,7 +243,7 @@ Overfull \hbox (38.26585pt too wide) in paragraph at lines 5407--5407
 .etc.
 
 
-Overfull \hbox (38.26585pt too wide) in paragraph at lines 5408--5408
+Overfull \hbox (38.26585pt too wide) in paragraph at lines 5413--5413
  []@texttt set [+abefhkmnptuvxBCEHPT] [+o @textttsl option-name@texttt ] [--] [
 -] [@textttsl ar-gu-ment []@texttt ][] 
 
@@ -261,7 +262,7 @@ Overfull \hbox (38.26585pt too wide) in paragraph at lines 5408--5408
 [119] [120]
 texinfo.tex: doing @include of rluser.texi
 
- (/usr/local/src/bash/bash-20230907/lib/readline/doc/rluser.texi
+ (/usr/local/src/bash/bash-20230911/lib/readline/doc/rluser.texi
 Chapter 8 [121] [122] [123] [124] [125] [126] [127] [128] [129] [130] [131]
 [132]
 Underfull \hbox (badness 7540) in paragraph at lines 878--884
@@ -311,10 +312,10 @@ gnored[]
 texinfo.tex: doing @include of hsuser.texi
 
 
-(/usr/local/src/bash/bash-20230907/lib/readline/doc/hsuser.texi Chapter 9
+(/usr/local/src/bash/bash-20230911/lib/readline/doc/hsuser.texi Chapter 9
 [158] [159] [160] [161] [162] [163]) Chapter 10 [164] [165] [166] [167]
 [168]
-Underfull \hbox (badness 10000) in paragraph at lines 9743--9752
+Underfull \hbox (badness 10000) in paragraph at lines 9748--9757
 []@textrm All of the fol-low-ing op-tions ex-cept for `@texttt alt-array-implem
 entation[]@textrm '[],
 
@@ -327,7 +328,7 @@ entation[]@textrm '[],
 .etc.
 
 
-Underfull \hbox (badness 10000) in paragraph at lines 9743--9752
+Underfull \hbox (badness 10000) in paragraph at lines 9748--9757
 @textrm `@texttt disabled-builtins[]@textrm '[], `@texttt direxpand-default[]@t
 extrm '[], `@texttt strict-posix-default[]@textrm '[], and
 
@@ -343,17 +344,17 @@ extrm '[], `@texttt strict-posix-default[]@textrm '[], and
 [178] [179] Appendix C [180]
 texinfo.tex: doing @include of fdl.texi
 
- (/usr/local/src/bash/bash-20230907/doc/fdl.texi
+ (/usr/local/src/bash/bash-20230911/doc/fdl.texi
 [181] [182] [183] [184] [185] [186] [187]) Appendix D [188] [189] [190]
 [191] [192] [193] [194] [195] [196] [197] ) 
 Here is how much of TeX's memory you used:
  4104 strings out of 497086
  47614 string characters out of 6206517
- 142215 words of memory out of 5000000
+ 142185 words of memory out of 5000000
  4869 multiletter control sequences out of 15000+600000
  34315 words of font info for 116 fonts, out of 8000000 for 9000
  51 hyphenation exceptions out of 8191
- 16i,6n,16p,331b,983s stack positions out of 5000i,500n,10000p,200000b,80000s
+ 16i,6n,16p,389b,983s stack positions out of 5000i,500n,10000p,200000b,80000s
 {/opt/local/share/texmf-texlive/font
 s/enc/dvips/cm-super/cm-super-t1.enc}</opt/local/share/texmf-texlive/fonts/type
 1/public/amsfonts/cm/cmbx12.pfb></opt/local/share/texmf-texlive/fonts/type1/pub
@@ -371,10 +372,10 @@ texlive/fonts/type1/public/amsfonts/cm/cmtt12.pfb></opt/local/share/texmf-texli
 ve/fonts/type1/public/amsfonts/cm/cmtt9.pfb></opt/local/share/texmf-texlive/fon
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-Output written on bashref.pdf (203 pages, 813794 bytes).
+Output written on bashref.pdf (203 pages, 813912 bytes).
 PDF statistics:
- 2825 PDF objects out of 2984 (max. 8388607)
- 2575 compressed objects within 26 object streams
+ 2824 PDF objects out of 2984 (max. 8388607)
+ 2574 compressed objects within 26 object streams
  331 named destinations out of 1000 (max. 500000)
  1157 words of extra memory for PDF output out of 10000 (max. 10000000)