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Merged
markparonyan merged 1 commit into from
Oct 1, 2026
Merged

Add comprehensive help message and -h flag support #34

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40 changes: 39 additions & 1 deletion dvtm.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1926,10 +1926,45 @@ static void
usage(void) {
cleanup();
eprint("usage: dvtm [-v] [-M] [-m mod] [-d delay] [-h lines] [-t title] "
"[-s status-fifo] [-c cmd-fifo] [cmd...]\n");
"[-s status-fifo] [-c cmd-fifo] [cmd...]\n"
"try 'dvtm -h' for more information\n");
exit(EXIT_FAILURE);
}

static void
help(void) {
cleanup();
puts("usage: dvtm [options] [cmd...]\n"
"\n"
"Each cmd is started in its own window; without any, $SHELL is used.\n"
"\n"
"options:\n"
" -v print version and exit\n"
" -h print this help and exit\n"
" -m mod command prefix key, e.g. ^b (default ^g)\n"
" -M toggle mouse support\n"
" -d delay ESC delay in ms, 50-1000 (default 100)\n"
" -h lines scrollback history size in lines\n"
" -t title terminal title\n"
" -s status-fifo FIFO to read status bar text from\n"
" -c cmd-fifo FIFO to read dvtm commands from ($DVTM_CMD_FIFO)\n"
"\n"
"keys (prefix = mod):\n"
" mod c / x x new window / close window\n"
" mod j k focus next / previous window\n"
" mod h l shrink / grow master area\n"
" mod f g b m tile, grid, bottom stack, fullscreen layout\n"
" mod Enter zoom window into master area\n"
" mod 1..9 focus window by number\n"
" mod v N view tag N (mod t N moves window to tag N)\n"
" mod e / PgUp copy mode / scroll back\n"
" mod ? open the manual\n"
" mod q q quit\n"
"\n"
"see dvtm(1) for the full list of keys and commands.");
exit(EXIT_SUCCESS);
}

static bool
parse_args(int argc, char *argv[]) {
bool init = false;
Expand All @@ -1949,6 +1984,9 @@ parse_args(int argc, char *argv[]) {
create(args);
continue;
}
if (!strcmp(argv[arg], "--help") ||
(argv[arg][1] == 'h' && (arg + 1) >= argc))
help();
if (argv[arg][1] != 'v' && argv[arg][1] != 'M' && (arg + 1) >= argc)
usage();
switch (argv[arg][1]) {
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