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authorLasse Collin <lasse.collin@tukaani.org>2010-09-04 22:10:32 +0300
committerLasse Collin <lasse.collin@tukaani.org>2010-09-04 22:10:32 +0300
commit474bac0c33e94aeaca8ada17ab19972b1424bc2b (patch)
tree4be3381da2cc3bdab070c349e310baef415c9edd
parentAdjust memory limits in test_compress.sh (diff)
downloadxz-474bac0c33e94aeaca8ada17ab19972b1424bc2b.tar.xz
xz: Minor improvements to --help and --long-help.
-rw-r--r--src/xz/message.c24
1 files changed, 12 insertions, 12 deletions
diff --git a/src/xz/message.c b/src/xz/message.c
index 4ccc893c..6dfa4aac 100644
--- a/src/xz/message.c
+++ b/src/xz/message.c
@@ -1089,7 +1089,7 @@ message_help(bool long_help)
" -z, --compress force compression\n"
" -d, --decompress force decompression\n"
" -t, --test test compressed file integrity\n"
-" -l, --list list information about files"));
+" -l, --list list information about .xz files"));
if (long_help)
puts(_("\n Operation modifiers:\n"));
@@ -1103,27 +1103,27 @@ message_help(bool long_help)
puts(_(
" --no-sparse do not create sparse files when decompressing\n"
" -S, --suffix=.SUF use the suffix `.SUF' on compressed files\n"
-" --files=[FILE] read filenames to process from FILE; if FILE is\n"
+" --files[=FILE] read filenames to process from FILE; if FILE is\n"
" omitted, filenames are read from the standard input;\n"
" filenames must be terminated with the newline character\n"
-" --files0=[FILE] like --files but use the null character as terminator"));
+" --files0[=FILE] like --files but use the null character as terminator"));
if (long_help) {
puts(_("\n Basic file format and compression options:\n"));
puts(_(
" -F, --format=FMT file format to encode or decode; possible values are\n"
" `auto' (default), `xz', `lzma', and `raw'\n"
-" -C, --check=CHECK integrity check type: `crc32', `crc64' (default),\n"
-" `sha256', or `none' (use with caution)"));
+" -C, --check=CHECK integrity check type: `none' (use with caution),\n"
+" `crc32', `crc64' (default), or `sha256'"));
}
puts(_(
-" -0 .. -9 compression preset; 0-2 fast compression, 3-5 good\n"
-" compression, 6-9 excellent compression; default is 6"));
+" -0 ... -9 compression preset; default is 6; take compressor *and*\n"
+" decompressor memory usage into account before using 7-9!"));
puts(_(
-" -e, --extreme use more CPU time when encoding to increase compression\n"
-" ratio without increasing memory usage of the decoder"));
+" -e, --extreme try to improve compression ratio by using more CPU time;\n"
+" does not affect decompressor memory requirements"));
if (long_help) {
puts(_( // xgettext:no-c-format
@@ -1148,7 +1148,7 @@ message_help(bool long_help)
"\n"
" --lzma1[=OPTS] LZMA1 or LZMA2; OPTS is a comma-separated list of zero or\n"
" --lzma2[=OPTS] more of the following options (valid values; default):\n"
-" preset=NUM reset options to preset number NUM (0-9)\n"
+" preset=PRE reset options to a preset (0-9[e])\n"
" dict=NUM dictionary size (4KiB - 1536MiB; 8MiB)\n"
" lc=NUM number of literal context bits (0-4; 3)\n"
" lp=NUM number of literal position bits (0-4; 0)\n"
@@ -1161,9 +1161,9 @@ message_help(bool long_help)
puts(_(
"\n"
-" --x86[=OPTS] x86 BCJ filter\n"
+" --x86[=OPTS] x86 BCJ filter (32-bit and 64-bit)\n"
" --powerpc[=OPTS] PowerPC BCJ filter (big endian only)\n"
-" --ia64[=OPTS] IA64 (Itanium) BCJ filter\n"
+" --ia64[=OPTS] IA-64 (Itanium) BCJ filter\n"
" --arm[=OPTS] ARM BCJ filter (little endian only)\n"
" --armthumb[=OPTS] ARM-Thumb BCJ filter (little endian only)\n"
" --sparc[=OPTS] SPARC BCJ filter\n"