[PATCH 3(a)/3] _man: Support _correct_word.

[Daniel Shahaf <d.s@daniel.shahaf.name>]

The 'compfiles' call in «man 8 foo<TAB>» resulted in glob patterns of the form
«.../foo*», so the would-be targets of spelling correction would not have been
provided to the completion code by the globbing code.

Fix this by mimicking the only other callsite of compfiles, _path_files, which
passes a flag (${_comp_correct:+"-"}) that is only set by _approximate and
causes cfp_opt_pats() to be skipped.  This enables spelling correction to work,
however, it is unknown what side effects it may have.
---
 Completion/Unix/Command/_man |  2 +-
 Src/Zle/computil.c           | 15 +++++++++++++++
 2 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/Completion/Unix/Command/_man b/Completion/Unix/Command/_man
index ffe53be..3900cba 100644
--- a/Completion/Unix/Command/_man
+++ b/Completion/Unix/Command/_man
@@ -131,7 +131,7 @@ _man_pages() {
   fi
 
   pages=( ${(M)dirs:#*$sect_dirname/} )
-  compfiles -p pages '' '' "$matcher" '' dummy "*${sect}*"
+  compfiles -p${_comp_correct:+"-"} pages '' '' "$matcher" '' dummy "*${sect}*"
   pages=( ${^~pages}(N:t) )
 
   (($#mrd)) && pages[$#pages+1]=($(awk $awk $mrd))
diff --git a/Src/Zle/computil.c b/Src/Zle/computil.c
index e8f0a6f..0028ac1 100644
--- a/Src/Zle/computil.c
+++ b/Src/Zle/computil.c
@@ -4480,6 +4480,10 @@ cfp_matcher_pats(char *matcher, char *add)
     return add;
 }
 
+/*
+ * ### This function call is skipped by _approximate, so "opt" probably means "optimize".
+ */
+
 static void
 cfp_opt_pats(char **pats, char *matcher)
 {
@@ -4811,6 +4815,17 @@ cf_remove_other(char **names, char *pre, int *amb)
     return NULL;
 }
 
+/*
+ * SYNOPSIS:
+ *     1. compfiles -p  parnam1 parnam2 skipped matcher sdirs parnam3 varargs [..varargs]
+ *     2. compfiles -p- parnam1 parnam2 skipped matcher sdirs parnam3 varargs [..varargs]
+ *     3. compfiles -P  parnam1 parnam2 skipped matcher sdirs parnam3 
+ *
+ *     1. Set parnam1 to an array of patterns....
+ *     2. Like #1 but without calling cfp_opt_pats().  (This is only used by _approximate.)
+ *     3. Like #1 but varargs is implicitly set to  char *varargs[2] = { "*(-/)", NULL };.
+ */
+
 static int
 bin_compfiles(char *nam, char **args, UNUSED(Options ops), UNUSED(int func))
 {