Update the quick ref.

- builtins: alias, unalias, compgen (partial)
- modes: strict-word-eval (done), strict-var-eval (speculative)
- latest ideas about Oil
  - including all the compatibility shims like sh-expr

doc/osh-quick-ref-toc.txt

@@ -27,7 +27,7 @@ COMMAND LANGUAGE

OIL COMMAND LANGUAGE

X [Conditional]   switch   match   if-expr (
X [Conditional]   match-with   match-case   if-expr (
X [Iteration]     for-expr (   while-expr (
X [Grouping]      proc   func   lazy   pure   do {   shell {  
X [Context]       with-cd   with-redir   with-env   with-vars   with-file
@@ -93,19 +93,20 @@ BUILTIN COMMANDS
  [Run Code]      source .   eval   trap
  [Set Options]   set   shopt
  [Working Dir]   cd   pwd   pushd   popd   dirs
  [Completion]    complete   X compgen   X compopt
  [Completion]    complete   compgen   X compopt
  [Shell Process] exec   X logout 
                  umask   X ulimit   X times
  [Child Process] jobs   wait   ampersand &
                  X fg   X bg   X disown 
  [External]      test [   X printf   getopts   X kill
  [Introspection] help   X hash   type   X caller
X [Word Lookup]   command   builtin
X [Interactive]   alias   unalias   bind   history   fc
  [Interactive]   alias   unalias   X bind   X history   X fc
X [Unsupported]   enable

OIL BUILTINS
  [I/O]           write   readline   sh-builtin   sh-eval
  [Compatibility] sh-builtin   sh-eval   sh-expr
  [I/O]           write   readline
  [External]      dirname   basename   env ?

SHELL OPTIONS
@@ -114,8 +115,9 @@ SHELL OPTIONS
  [Debugging]     xtrace   X verbose   X extdebug
  [Other]         X noclobber
  [Parsing]       TODO
  [OSH Strict]    STRICT   strict-array   strict-control-flow   
                  strict-errexit   X strict-arith
  [OSH Strict]    STRICT   strict-array   X strict-arith
                  strict-errexit   strict-control-flow   X strict-scope
                  strict-word-eval   strict-var-eval
  [OSH Sane]      SANE   X sane-no-word-split   X sane-glob
                  X sane-echo   X sane-read   X sane-eval   X sane-trap

@@ -157,9 +159,9 @@ X [xargs]         each

OIL LIBRARIES

X [Compatibility] shExpr()   shEval()   
X [Builtin Procs] log   die
X [Builtin Funcs] join()   split()   strftime()
                  shEvalArith()   shEvalWord()   
X [getopts]       ?
X [Testing]       ?
X [Data Formats]  json   csv   tsv2