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authorNicholas Clark <nick@ccl4.org>2010-04-17 13:13:39 +0100
committerNicholas Clark <nick@ccl4.org>2010-04-17 13:13:39 +0100
commit1566c39dba538bbd5b7afdb46ec3a4c1e760a6ca (patch)
treeda13c2f5508cd31c4baca9ac175482f83195c5ab
parentc8a80d16cf4dde2a23dbe6b03778a8766e0f3f5f (diff)
downloadperl-1566c39dba538bbd5b7afdb46ec3a4c1e760a6ca.tar.gz
In S_usage(), restructure the storage of the help message into fewer literals.
This reduces the object code size slightly.
-rw-r--r--perl.c72
1 files changed, 36 insertions, 36 deletions
diff --git a/perl.c b/perl.c
index 6824835ee6..708ab3d2cd 100644
--- a/perl.c
+++ b/perl.c
@@ -2812,51 +2812,51 @@ S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
/* This message really ought to be max 23 lines.
* Removed -h because the user already knows that option. Others? */
+ /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
+ minimum of 509 character string literals. */
static const char * const usage_msg[] = {
-"-0[octal] specify record separator (\\0, if no argument)",
-"-a autosplit mode with -n or -p (splits $_ into @F)",
-"-C[number/list] enables the listed Unicode features",
-"-c check syntax only (runs BEGIN and CHECK blocks)",
-"-d[:debugger] run program under debugger",
-"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
-"-e program one line of program (several -e's allowed, omit programfile)",
-"-E program like -e, but enables all optional features",
-"-f don't do $sitelib/sitecustomize.pl at startup",
-"-F/pattern/ split() pattern for -a switch (//'s are optional)",
-"-i[extension] edit <> files in place (makes backup if extension supplied)",
-"-Idirectory specify @INC/#include directory (several -I's allowed)",
-"-l[octal] enable line ending processing, specifies line terminator",
-"-[mM][-]module execute \"use/no module...\" before executing program",
-"-n assume \"while (<>) { ... }\" loop around program",
-"-p assume loop like -n but print line also, like sed",
-"-s enable rudimentary parsing for switches after programfile",
-"-S look for programfile using PATH environment variable",
-"-t enable tainting warnings",
-"-T enable tainting checks",
-"-u dump core after parsing program",
-"-U allow unsafe operations",
-"-v print version, patchlevel and license",
-"-V[:variable] print configuration summary (or a single Config.pm variable)",
-"-w enable many useful warnings (RECOMMENDED)",
-"-W enable all warnings",
-"-x[directory] ignore text before #!perl line (optionally cd to directory)",
-"-X disable all warnings",
-"\n",
+" -0[octal] specify record separator (\\0, if no argument)\n"
+" -a autosplit mode with -n or -p (splits $_ into @F)\n"
+" -C[number/list] enables the listed Unicode features\n"
+" -c check syntax only (runs BEGIN and CHECK blocks)\n"
+" -d[:debugger] run program under debugger\n"
+" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
+" -e program one line of program (several -e's allowed, omit programfile)\n"
+" -E program like -e, but enables all optional features\n"
+" -f don't do $sitelib/sitecustomize.pl at startup\n"
+" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
+" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
+" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
+" -l[octal] enable line ending processing, specifies line terminator\n"
+" -[mM][-]module execute \"use/no module...\" before executing program\n"
+" -n assume \"while (<>) { ... }\" loop around program\n"
+" -p assume loop like -n but print line also, like sed\n"
+" -s enable rudimentary parsing for switches after programfile\n"
+" -S look for programfile using PATH environment variable\n",
+" -t enable tainting warnings\n"
+" -T enable tainting checks\n"
+" -u dump core after parsing program\n"
+" -U allow unsafe operations\n"
+" -v print version, patchlevel and license\n"
+" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
+" -w enable many useful warnings (RECOMMENDED)\n"
+" -W enable all warnings\n"
+" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
+" -X disable all warnings\n"
+" \n"
+"Run 'perldoc perl' for more help with Perl.\n\n",
NULL
};
const char * const *p = usage_msg;
+ PerlIO *out = PerlIO_stdout();
PERL_ARGS_ASSERT_USAGE;
- PerlIO_printf(PerlIO_stdout(),
- "\nUsage: %s [switches] [--] [programfile] [arguments]",
+ PerlIO_printf(out,
+ "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
name);
while (*p)
- PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
-
- PerlIO_printf(PerlIO_stdout(),
- "Run 'perldoc perl' for more help with Perl.\n\n"
- );
+ PerlIO_puts(out, *p++);
}
/* convert a string of -D options (or digits) into an int.