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Introduce $FISH_DEBUG and $FISH_DEBUG_OUTPUT variables

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Same as the `--debug` and `--debug-output` options, can be enabled
when the option can't be passed, e.g. in linux shebangs.

Fixes #7359.
This commit is contained in:
Fabian Homborg
2020-09-28 17:10:40 +02:00
parent b1818270f9
commit d6d3abf59a
3 changed files with 19 additions and 0 deletions
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13
src/fish.cpp
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@@ -419,10 +419,23 @@ int main(int argc, char **argv) {
argv = const_cast<char **>(dummy_argv); //!OCLINT(parameter reassignment)
argc = 1; //!OCLINT(parameter reassignment)
}
// Enable debug categories set in FISH_DEBUG.
// This is in *addition* to the ones given via --debug.
if (const char *debug_categories = getenv("FISH_DEBUG")) {
activate_flog_categories_by_pattern(str2wcstring(debug_categories));
}
fish_cmd_opts_t opts{};
my_optind = fish_parse_opt(argc, argv, &opts);
// Direct any debug output right away.
// --debug-output takes precedence, otherwise $FISH_DEBUG_OUTPUT is used.
if (opts.debug_output.empty()) {
const char *var = getenv("FISH_DEBUG_OUTPUT");
if (var) opts.debug_output = var;
}
FILE *debug_output = nullptr;
if (!opts.debug_output.empty()) {
debug_output = fopen(opts.debug_output.c_str(), "w");