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fix incorrectly aligned carat in command expansion errors and more

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- fix the carat position expanding e.g. `command $,`
- improve the error reporting for not-allowed command subtitutions
  by figuring out where the expansion failed instead of using
  SOURCE_LOCATION_UNKNOWN
- allow nullptr for parse_util_licate_brackets_range() out_string
  argument if we don't need it to do any work.

Fixes #5812
This commit is contained in:
Aaron Gyes
2019-04-11 14:28:27 -07:00
parent 4539a9db15
commit 75db3b4ff4
2 changed files with 15 additions and 9 deletions
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7
src/parse_util.cpp
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@@ -185,7 +185,7 @@ static int parse_util_locate_brackets_range(const wcstring &str, size_t *inout_c
size_t *out_end, bool accept_incomplete,
wchar_t open_type, wchar_t close_type) {
// Clear the return values.
out_contents->clear();
if (out_contents != nullptr) out_contents->clear();
*out_start = 0;
*out_end = str.size();
@@ -213,7 +213,9 @@ static int parse_util_locate_brackets_range(const wcstring &str, size_t *inout_c
// Assign the substring to the out_contents.
const wchar_t *interior_begin = bracket_range_begin + 1;
out_contents->assign(interior_begin, bracket_range_end - interior_begin);
if (out_contents != nullptr) {
out_contents->assign(interior_begin, bracket_range_end - interior_begin);
}
// Return the start and end.
*out_start = bracket_range_begin - buff;
@@ -1134,6 +1136,7 @@ static bool detect_errors_in_plain_statement(const wcstring &buff_src,
if (expand_to_command_and_args(*unexp_command, null_environment_t{}, &command, nullptr,
parse_errors) == EXPAND_ERROR) {
errored = true;
parse_error_offset_source_start(parse_errors, source_start);
}
// Check that pipes are sound.