Parseopt wraps argument help strings in a pair of angular brackets by
default, to tell users that they need to replace it with an actual
value.  This is useful in most cases, because most option arguments
are indeed single values of a certain type.  The option
PARSE_OPT_LITERAL_ARGHELP needs to be used in option definitions with
arguments that have multiple parts or are literal strings.

Stop adding these angular brackets if special characters are present,
as they indicate that we don't deal with a simple placeholder.  This
simplifies the code a bit and makes defining special options slightly
easier.

Remove the flag PARSE_OPT_LITERAL_ARGHELP in the cases where the new
and more cautious handling suffices.

Signed-off-by: Rene Scharfe <l....@web.de>
---
The patch to add PARSE_OPT_LITERAL_ARGHELP for push --force-with-lease
should be applied before this one.

 builtin/add.c          | 5 ++---
 builtin/pack-objects.c | 2 +-
 builtin/read-tree.c    | 2 +-
 builtin/send-pack.c    | 3 +--
 builtin/shortlog.c     | 3 +--
 builtin/show-branch.c  | 2 +-
 builtin/update-index.c | 2 +-
 builtin/write-tree.c   | 5 ++---
 parse-options.c        | 3 ++-
 9 files changed, 12 insertions(+), 15 deletions(-)

diff --git a/builtin/add.c b/builtin/add.c
index 84bfec9b73..ba1ff5689d 100644
--- a/builtin/add.c
+++ b/builtin/add.c
@@ -304,9 +304,8 @@ static struct option builtin_add_options[] = {
        OPT_BOOL( 0 , "refresh", &refresh_only, N_("don't add, only refresh the 
index")),
        OPT_BOOL( 0 , "ignore-errors", &ignore_add_errors, N_("just skip files 
which cannot be added because of errors")),
        OPT_BOOL( 0 , "ignore-missing", &ignore_missing, N_("check if - even 
missing - files are ignored in dry run")),
-       { OPTION_STRING, 0, "chmod", &chmod_arg, "(+|-)x",
-         N_("override the executable bit of the listed files"),
-         PARSE_OPT_LITERAL_ARGHELP },
+       OPT_STRING(0, "chmod", &chmod_arg, "(+|-)x",
+                  N_("override the executable bit of the listed files")),
        OPT_HIDDEN_BOOL(0, "warn-embedded-repo", &warn_on_embedded_repo,
                        N_("warn when adding an embedded repository")),
        OPT_END(),
diff --git a/builtin/pack-objects.c b/builtin/pack-objects.c
index 3a5d1fa317..b2323613bc 100644
--- a/builtin/pack-objects.c
+++ b/builtin/pack-objects.c
@@ -3112,7 +3112,7 @@ int cmd_pack_objects(int argc, const char **argv, const 
char *prefix)
                         N_("similar to --all-progress when progress meter is 
shown")),
                { OPTION_CALLBACK, 0, "index-version", NULL, 
N_("<version>[,<offset>]"),
                  N_("write the pack index file in the specified idx format 
version"),
-                 PARSE_OPT_LITERAL_ARGHELP, option_parse_index_version },
+                 0, option_parse_index_version },
                OPT_MAGNITUDE(0, "max-pack-size", &pack_size_limit,
                              N_("maximum size of each output pack file")),
                OPT_BOOL(0, "local", &local,
diff --git a/builtin/read-tree.c b/builtin/read-tree.c
index ebc43eb805..fbbc98e516 100644
--- a/builtin/read-tree.c
+++ b/builtin/read-tree.c
@@ -133,7 +133,7 @@ int cmd_read_tree(int argc, const char **argv, const char 
*unused_prefix)
                         N_("same as -m, but discard unmerged entries")),
                { OPTION_STRING, 0, "prefix", &opts.prefix, 
N_("<subdirectory>/"),
                  N_("read the tree into the index under <subdirectory>/"),
-                 PARSE_OPT_NONEG | PARSE_OPT_LITERAL_ARGHELP },
+                 PARSE_OPT_NONEG },
                OPT_BOOL('u', NULL, &opts.update,
                         N_("update working tree with merge result")),
                { OPTION_CALLBACK, 0, "exclude-per-directory", &opts,
diff --git a/builtin/send-pack.c b/builtin/send-pack.c
index 0b517c9368..724b484850 100644
--- a/builtin/send-pack.c
+++ b/builtin/send-pack.c
@@ -180,8 +180,7 @@ int cmd_send_pack(int argc, const char **argv, const char 
*prefix)
                { OPTION_CALLBACK,
                  0, CAS_OPT_NAME, &cas, N_("<refname>:<expect>"),
                  N_("require old value of ref to be at this value"),
-                 PARSE_OPT_OPTARG | PARSE_OPT_LITERAL_ARGHELP,
-                 parseopt_push_cas_option },
+                 PARSE_OPT_OPTARG, parseopt_push_cas_option },
                OPT_END()
        };
 
diff --git a/builtin/shortlog.c b/builtin/shortlog.c
index f555cf9e4f..3898a2c9c4 100644
--- a/builtin/shortlog.c
+++ b/builtin/shortlog.c
@@ -269,8 +269,7 @@ int cmd_shortlog(int argc, const char **argv, const char 
*prefix)
                OPT_BOOL('e', "email", &log.email,
                         N_("Show the email address of each author")),
                { OPTION_CALLBACK, 'w', NULL, &log, N_("<w>[,<i1>[,<i2>]]"),
-                       N_("Linewrap output"),
-                       PARSE_OPT_OPTARG | PARSE_OPT_LITERAL_ARGHELP,
+                       N_("Linewrap output"), PARSE_OPT_OPTARG,
                        &parse_wrap_args },
                OPT_END(),
        };
diff --git a/builtin/show-branch.c b/builtin/show-branch.c
index f2e985c00a..9106da1985 100644
--- a/builtin/show-branch.c
+++ b/builtin/show-branch.c
@@ -673,7 +673,7 @@ int cmd_show_branch(int ac, const char **av, const char 
*prefix)
                { OPTION_CALLBACK, 'g', "reflog", &reflog_base, 
N_("<n>[,<base>]"),
                            N_("show <n> most recent ref-log entries starting 
at "
                               "base"),
-                           PARSE_OPT_OPTARG | PARSE_OPT_LITERAL_ARGHELP,
+                           PARSE_OPT_OPTARG,
                            parse_reflog_param },
                OPT_END()
        };
diff --git a/builtin/update-index.c b/builtin/update-index.c
index 7feda6e271..293f59247b 100644
--- a/builtin/update-index.c
+++ b/builtin/update-index.c
@@ -973,7 +973,7 @@ int cmd_update_index(int argc, const char **argv, const 
char *prefix)
                        (parse_opt_cb *) cacheinfo_callback},
                {OPTION_CALLBACK, 0, "chmod", &set_executable_bit, "(+|-)x",
                        N_("override the executable bit of the listed files"),
-                       PARSE_OPT_NONEG | PARSE_OPT_LITERAL_ARGHELP,
+                       PARSE_OPT_NONEG,
                        chmod_callback},
                {OPTION_SET_INT, 0, "assume-unchanged", &mark_valid_only, NULL,
                        N_("mark files as \"not changing\""),
diff --git a/builtin/write-tree.c b/builtin/write-tree.c
index c9d3c544e7..cdcbf8264e 100644
--- a/builtin/write-tree.c
+++ b/builtin/write-tree.c
@@ -24,9 +24,8 @@ int cmd_write_tree(int argc, const char **argv, const char 
*unused_prefix)
        struct option write_tree_options[] = {
                OPT_BIT(0, "missing-ok", &flags, N_("allow missing objects"),
                        WRITE_TREE_MISSING_OK),
-               { OPTION_STRING, 0, "prefix", &prefix, N_("<prefix>/"),
-                 N_("write tree object for a subdirectory <prefix>") ,
-                 PARSE_OPT_LITERAL_ARGHELP },
+               OPT_STRING(0, "prefix", &prefix, N_("<prefix>/"),
+                          N_("write tree object for a subdirectory <prefix>")),
                { OPTION_BIT, 0, "ignore-cache-tree", &flags, NULL,
                  N_("only useful for debugging"),
                  PARSE_OPT_HIDDEN | PARSE_OPT_NOARG, NULL,
diff --git a/parse-options.c b/parse-options.c
index 7db84227ab..3b874a83a0 100644
--- a/parse-options.c
+++ b/parse-options.c
@@ -660,7 +660,8 @@ int parse_options(int argc, const char **argv, const char 
*prefix,
 static int usage_argh(const struct option *opts, FILE *outfile)
 {
        const char *s;
-       int literal = (opts->flags & PARSE_OPT_LITERAL_ARGHELP) || !opts->argh;
+       int literal = (opts->flags & PARSE_OPT_LITERAL_ARGHELP) ||
+               !opts->argh || !!strpbrk(opts->argh, "()<>[]|");
        if (opts->flags & PARSE_OPT_OPTARG)
                if (opts->long_name)
                        s = literal ? "[=%s]" : "[=<%s>]";
-- 
2.18.0

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