Commit graph

1522 commits

Author SHA1 Message Date
Mark Jansen
c3b3fcd111
[RAPPS] Abort screenshot iteration on the first not found
This should decrease startup time / db parse time
2020-10-25 20:30:03 +01:00
Mark Jansen
964c22c1ca
[RAPPS][RAPPS.COM] Introduce a rapps console shim
rapps.com will be launched when running 'rapps' from cmd or
from run, and since it is a console application, explorer/ cmd will
wait for it.
This rapps.com passes the commandline to rapps.exe,
and wait for rapps.exe to exit before closing.

CORE-17281
2020-10-25 15:44:33 +01:00
Jérôme Gardou
ab825334dd Apply suggestions from code review
Beautification and clarity

Co-authored-by: Victor Perevertkin <victor@perevertkin.ru>
Co-authored-by: Hermès BÉLUSCA - MAÏTO <hermes.belusca-maito@reactos.org>
2020-10-20 21:44:54 +02:00
Jérôme Gardou
c004b53d77 Apply suggestions from code review
Style fixes

Co-authored-by: Hermès BÉLUSCA - MAÏTO <hermes.belusca-maito@reactos.org>
Co-authored-by: Victor Perevertkin <victor@perevertkin.ru>
2020-10-20 21:44:54 +02:00
Jérôme Gardou
00ed72d7e8 [CMAKE] Get rid of add_compile_flags
Use add_compile_options and the like instead
2020-10-20 21:44:54 +02:00
Jérôme Gardou
ed61512236 [CMAKE] Get rid of add_compile_flags_language macro
in favor of add_compile_options and the like with generator expressions
Also take this as an opportunity to remove the C++11 standard hack, GCC 8 now defaults to C++14
2020-10-20 21:44:54 +02:00
Jérôme Gardou
7e116f0ef3 [CMAKE] Get rid of replace_compile_flags
Introduce a finer-grained remove_target_compile_option instead
2020-10-20 21:44:54 +02:00
Jérôme Gardou
907025a018 [CMAKE] Introduce the atl_classes interface library
This takes care of adding the relvant include directory and the _ATL_NO_EXCEPTIONS define, if needed
2020-10-20 21:44:54 +02:00
Jérôme Gardou
d6ea8659c8 [CMAKE] Get rid of the set_cpp macro
Instead of messing with global variables and the like, we introduce two target properties:
 - WITH_CXX_EXCEPTIONS: if you want to use C++ exceptions
 - WITH_CXX_RTTI: if you need RTTI in your module
You can use the newly introduced set_target_cpp_properties function, with WITH_EXCEPTIONS and WITH_RTTI arguments
We also introduce two libraries :
 - cpprt: for C++ runtime routines
 - cppstl: for the C++ standard template library

NB: On GCC, this requires to create imported libraries with the related built-in libraries:libsupc++, limingwex, libstdc++

Finally, we manage the relevant flags with the ad-hoc generator expressions

So, if you don't need exceptions, nor RTTI, nor use any runtime at all: you simply have nothing else to do than add your C++ file to your module
2020-10-20 21:44:54 +02:00
Hermès Bélusca-Maïto
6c94e4f487
[USETUP] Work around GCC's complaints (will be fixed properly later on). 2020-10-20 01:32:30 +02:00
Hermès Bélusca-Maïto
08924c1850
[USETUP][SETUPLIB] Continue hiding the FAT32 format in the format list, but take it into account anyway later on.
The formatter will select it anyway as soon as the partition size
permits it. We make it available internally however so as to "emulate"
FMIFS functionality.

Now rely on the partition filesystem for InstallVBRToPartition() instead
of the unreliable and deprecated partition type.
2020-10-20 01:19:58 +02:00
Hermès Bélusca-Maïto
593bcce999
[SETUPLIB] Code re-organization in bootsup.c and fsutil.c.
- Move the actual VBR bootcode installation helpers into fsutil.c
  (they depend on the selected filesystem).

- Introduce InstallBootCodeToDisk() and InstallBootCodeToFile()
  and bootcode.c helpers, in order to replace the several functions
  that were duplicating the same code.
2020-10-18 20:56:16 +02:00
Hermès Bélusca-Maïto
b51b8ee2d5
[SETUPLIB] Move the filesystem recognition helpers to their own file. 2020-10-18 20:56:16 +02:00
Stanislav Motylkov
8a4273b6ee
[FREELDR] Add variable for default text color
On PC/AT-compatible machines it's Gray, and on NEC PC-98 series it's White.
2020-10-17 19:28:08 +03:00
Stanislav Motylkov
9be9750dc8
[SETUPLIB] Fix some copy-pasta comments, no code changes 2020-10-17 00:48:30 +03:00
Omer I.S
c758d15d0a
[RAPPS] Update Hebrew (he-IL) translation (#3297) 2020-10-15 17:12:50 +03:00
chirsz
a91a709a8d
[CMD] Fix a typo in filename completion (#3293)
Fix filename completion that could cause a incorrect result when the path
contains "dots". (See also HBelusca@d12169b.)
See CORE-8623 and CORE-1901 (bug introduced in r25896 / 54cf74f).

For example:

- The current directory is `C:\Documents and Settings\Administrator\`, and you
  input `".` and press TAB. The completion result would be `".Administrator"`,
  which even does not exist.

- You input "some(file).ext", and you remove the final quote (or the quote
  and "ext") and you attempt to complete the file name.

- Import two additional fixes from HBelusca@a826730: Fix the search ordering
  in the comparisons between szSearch1, szSearch2 and szSearch3.

Co-authored-by: Hermès BÉLUSCA - MAÏTO <hermes.belusca-maito@reactos.org>
2020-10-11 21:57:08 +02:00
Mark Jansen
7a2c1f7d0b
[RAPPS] Re-add support for icons named after the ini file 2020-10-11 17:01:06 +02:00
Mark Jansen
12caaece25
[RAPPS] Fix certificate pinning error displaying garbage 2020-10-11 17:01:06 +02:00
Mark Jansen
12489f691b
[RAPPS] Bump the rapps user agent version 2020-10-11 17:01:06 +02:00
Mark Jansen
d564b4afc3
[RAPPS] Update rapps DB location to the new database 2020-10-11 17:01:06 +02:00
Mark Jansen
26da451ba5
[RAPPS] Delete icons and temp screenshot when cleaning up the db 2020-10-11 17:01:05 +02:00
Mark Jansen
a3a12271e1
[RAPPS] Add directory extraction capabilities for the .cab file 2020-10-11 17:01:05 +02:00
Mark Jansen
4f25a47677
[RAPPS] Add support for a rapps db with the file:/// scheme
This makes it easier to test locally
2020-10-11 17:01:05 +02:00
Hermès Bélusca-Maïto
87e2ec585f
[SMSS] Use RTL string-safe functions in critical places. Add validity checks for returned NtQueryValueKey() data. (#2704)
- Not all the wcscpy() / swprintf() calls have been converted to their
  string-safe equivalents. Instead I used the string-safe functions only
  for places where strings of unknown length were copied into fixed-size
  internal buffers. On the contrary, for known-fixed-length strings being
  copied or numbers being converted to string representations in large
  enough buffers, I kept the original function calls.

- Verify the registry data that has been returned by NtQueryValueKey():
  * When expecting (not multi) strings, check whether the data type is
    either REG_SZ or REG_EXPAND_SZ.
  * When expecting DWORD values, check whether the data type is
    REG_DWORD and whether the data length is (greater or) equal to
    sizeof(ULONG).
2020-10-10 16:25:22 +02:00
Hermès Bélusca-Maïto
0ff9b0ff7e
[WINLOGON] Display the shutdown message popup dialog on the current input desktop. (#3259)
CORE-17050

Display the shutdown message popup dialog on the current input desktop,
and periodically monitor for any change of the input desktop. When the
latter changes, close the dialog and recreate it on the new input desktop.

In addition, retain the current dialog position and restore it when the
dialog is recreated on the new desktop.
2020-10-05 02:26:03 +02:00
Hermès Bélusca-Maïto
be7bfc813d
[WINLOGON] Minor formatting only.
Add also original author's name (from original PR #458).
2020-10-05 02:26:02 +02:00
Hermès Bélusca-Maïto
434fa562ce
[USETUP] Do a trick to avoid visual "blinking" during screen clearing. (#3255)
CORE-17312

Hide everything under the same foreground & background colors, so that
the actual color and text blanking reset does not create a visual "blinking".
Then, blank the text and finally reset the actual foreground &
background colors.

We do this because we cannot do the screen scrolling trick that would
allow to change both the text and the colors at the same time (the
function is currently not available in our console "emulation" layer).
2020-10-02 00:20:21 +02:00
Hermès Bélusca-Maïto
66302e477c
[USETUP] Minor formatting only. 2020-10-02 00:04:11 +02:00
Hermès Bélusca-Maïto
ffc96d26ec
[UMPNPMGR][USETUP] Fix the way device-install events are queued and dequeued. Fixes CORE-16103.
Dedicated to the hard work of Joachim Henze! xD

This reverts part of commit 043a98dd (see also commit b2aeafca).

Contrary to what I assumed in commit 043a98dd (and was also assumed in
the older commit b2aeafca), we cannot use the singled-linked lists to
queue and dequeue the PnP device-install events, because:

- the events must be treated from the oldest to the newest ones, for
  consistency, otherwise this creates problems, as shown by e.g. CORE-16103;

- the system singled-linked lists only offer access to the top of the
  list (like a stack) instead of to both the top and the bottom of the
  list, as would be required for a queue. Using the SLISTs would mean
  that only the newest-received events would be treated first, while the
  oldest (which were the first received) events would be treated last,
  and this is wrong.

Therefore one must use e.g. the standard doubly-linked list. Also, using
locked operations (insertion & removal) on the list of device-install
events is necessary, because these operations are done concurrently by
two different threads: PnpEventThread() and DeviceInstallThread().
Since the interlocked linked list functions are not available in user-mode,
we need to use instead locking access through e.g. a mutex.
2020-10-01 01:52:09 +02:00
Hermès Bélusca-Maïto
f5ba9de2ee
[CMD] Fix substring-substitute regression from commit cdc8e45b (use signed offsets). 2020-09-28 00:41:17 +02:00
Hermès Bélusca-Maïto
895dccd4ac
[CMD] Cleanup all batch contexts if the execution loop stopped due to EXIT. 2020-09-27 20:26:36 +02:00
Hermès Bélusca-Maïto
f0fccb752f
[CMD] Fix batch/CALL arguments initialization.
- Move initialization of bc->raw_params also in BatchParams().

- The bc->raw_params, i.e. the unparsed batch/CALL parameters obtained
  with %*, has any leading and trailing whitespace trimmed
  (since Windows 2000+).
2020-09-27 19:06:10 +02:00
Hermès Bélusca-Maïto
37bda06eed
[CMD] CALL: Fix the implementation of the CALL command, make it more compatible with Windows' CMD.
- Fail if no parameter is provided.

- The "CALL :label args..." syntax is available only when command extensions
  are enabled. Fail if this syntax is used outside of a batch context.

- Reparse the CALL command parameter with the command parser, in order
  to accurately parse and interpret it as a possible command (including
  escape carets, etc...) and not duplicate the logic.
  ** CURRENT Windows' CMD-compatibility LIMITATION ** (may be lifted in
  a "ROS-specific" running mode of CMD): only allow standard commands to
  be specified as parameter of the CALL command.

  This reparsing behaviour can be observed in Windows' CMD, by dumping
  the interpreted commands after enabling the cmd!fDumpParse flag from
  a debugger (using public symbols).

- When reparsing, we should tell the parser to NOT ignore lines that
  start with a colon, because in this situation these are to be
  considered as valid "commands" (for parsing "CALL :label").

  * For Windows' CMD-compatibility, the remaining escape carets need to
    be doubled again so that, after the new parser step, they are escaped
    back to their original form. But then we also need to do it the "buggy"
    way à la Windows, where carets in quotes are doubled either! However
    when being re-parsed, since they are in quotes they remain doubled!!
    (see "Phase 6" in https://stackoverflow.com/a/4095133/13530036 ).

  * A MSCMD_CALL_QUIRKS define allows to disable this buggy behaviour,
    and instead tell the parser to not not interpret the escape carets.

- When initializing a new batch context when the "CALL :label" syntax is
  used, ensure that we reuse the same batch file position pointer as its
  parent, so as to have correct call label ordering behaviour.

  That is,

  :label
  ECHO hi
  CALL :label
  :label
  ECHO bye

  should display:

  hi
  bye
  bye

  i.e., the CALL calls the second label instead of the first one (and
  thus entering into an infinite loop).

  Finally, the "CALL :label" syntax strips the first ':' away, so, as a
  side-effect, the command "CALL :EOF" fails (otherwise it would perform
  a "GOTO :EOF" and succeeds), while "CALL ::EOF" succeeds.

Fixes some cmd_winetests.
2020-09-27 19:05:23 +02:00
Hermès Bélusca-Maïto
d029a626e9
[CMD] Make the command-line parser more compatible with Windows' CMD one.
All these modifications have been verified with Windows' CMD, either
by using written cmd_rostests and the existing cmd_winetests, or
manually by enabling the flags cmd!fDumpTokens and cmd!fDumpParse
(available in the public symbols) and analyzing how the tokens are
being parsed, as well as the generated command tree.

See also the following links for more details (but remember that these
observations have to be double-checked in Windows' CMD!):

* Parser rules: https://stackoverflow.com/a/4095133/13530036
* Discussion: https://www.dostips.com/forum/viewtopic.php?f=3&t=8355
* Numbers parsing: https://www.dostips.com/forum/viewtopic.php?t=3758
* Label names vs. GOTO and CALL: https://www.dostips.com/forum/viewtopic.php?f=3&t=3803
  and: https://www.dostips.com/forum/viewtopic.php?f=3&t=3803&p=55405#p55405

- Fix REM command parsing. A C_COMMAND-like structure should still
  be built, so that it can show up during batch command echo. However
  some specific handling needs to be done, so use instead a new C_REM
  command type.
  Escape carets are parsed differently than usual: they are explicitly
  kept in the command line and don't participate in line continuations.
  Also, the Windows' CMD behaviour is to discards everything before the
  last line continuation.

- Prefix operator '@' (the "silent" operator) is parsed as a separate
  command. Thus, the command @@foo@bar is parsed as: '@', '@', 'foo@bar'.

- Improve the checks for numbered redirection.
  For this purpose, we check whether this is a number, that is in first
  position in the current parsing buffer or is preceded by a whitespace-
  like separator, including standard command operators (excepting '@' !)
  and double-quotes.

- Empty command blocks, i.e. "( )", standing by themselves, or present
  in IF or FOR commands, are considered invalid. (The closing parenthesis
  is considered "unexpected".)

- Ignore single closing parenthesis when being outside of command blocks,
  thus interpreting it as a command, and ignore explicitly everything
  following on the same line, including line continuations.
  This very specific situation can happen e.g. while running in batch mode,
  when jumping to a label present inside a command block.
  See the code for a thorough explanation.

- Detect whether a parenthesized block is not terminated at the end
  of a command stream (getting a NUL character instead of a newline),
  and if so, bail out early instead of entering into an infinite loop.

- Perform a similar check for the parenthesized list in FOR commands.

- Initialize the static 'InsideBlock' value to a known value.

- The '&' operator (multi-commmand) is allowed to have an empty RHS.
  When such situation occurs, turn the CurrentTokenType to TOK_END
  so as to avoid a parse error later on.

- The main body of a IF statement, or its 'else' clause, as well as
  the main body of a FOR statement, must not be empty, otherwise this
  is considered a syntax error. If so, call ParseError() that sets
  the 'bParseError' flag, and forcing all batch execution to stop.
2020-09-27 02:27:15 +02:00
Adam Słaboń
50ff453434
[TRANSLATION] Polish translation update (#3233) 2020-09-26 21:42:36 +03:00
Mark Jansen
3da04a9b68
[RAPPS] Remove string casts after the conutils fix 2020-09-25 22:03:28 +02:00
Kyle Katarn
b9754fa5d6
[SETUP][MMSYS][SHELL32] Adding missing French translation (and update existing ones) (#3232)
Co-authored-by: Hermès BÉLUSCA - MAÏTO <hermes.belusca-maito@reactos.org>
2020-09-25 01:39:31 +02:00
Hermès Bélusca-Maïto
17e094cd34
[CMD] SET: Diverse fixes for the arithmetic-expression parser (/A option).
- Detect whether a division by zero is done, and fail if so.

- Detect whether an invalid number is provided:
  * If _tcstol() fails with errno == ERANGE, we've got an overflow or
    underflow.
  * If the next character where _tcstol() is not a whitespace but is a
    character compatible with the first character of an identifier, the
    number is invalid.

- Add + to the list of existing unary operators (!,~,-), and parse them
  where many of these are present. Indeed, expressions like: +3, -+-+3,
  !!-+3 (or with other unary ops, etc.) are valid.

- Operators constituted of more than one characters, can contain
  whitespace separating their constituting characters.
  Thus, "a + = 3" is equivalent to "a += 3" (and the same for -=, *=,
  /=, %=, &=, |= and ^=), and "a < < 3" is equivalent to "a << 3" (and
  the same for >>, <<= and >>=).

- After evaluating everything, if unparsed data remains, fail and bail out.

- Return Windows' CMD-compatible errorlevels.

See https://ss64.com/nt/set.html for more details.

Fixes some cmd_winetests.
2020-09-23 00:22:48 +02:00
Hermès Bélusca-Maïto
87a5403318
[CMD] Add a MSCMD_BATCH_ECHO define for enabling Windows' CMD.EXE way of preserving/restoring the echo flag across batch calls.
Observation shows that this is done only when the top-level batch file
is being run (and then terminates); the echo flag is not restored to its
previous state when a child batch file terminates and gives main back to
its parent batch.
2020-09-23 00:22:47 +02:00
Hermès Bélusca-Maïto
141378cfc8
[CMD] ASSOC: Simplify the code and make it more robust; fix returned ERRORLEVEL values.
- Make sure that non-administrator users can list associations, and
  display appropriate error messages when e.g. they don't have sufficient
  privileges to perform an operation.

- Make the helper functions all return Win32 values, used as the
  ERRORVALUE, except when a specific extension association fails to be
  displayed, in which case the ERRORVALUE is normalized to 1.

- Since the 'param' is a modifiable string (that can be modified by the
  command, independently of the way it's called), just use it to isolate
  the extension by zeroing out the equls-sign separator.
2020-09-23 00:22:47 +02:00
Hermès Bélusca-Maïto
63316df520
[CMD] Change ERRORLEVEL behaviour for commands ASSOC, PATH, PROMPT and SET.
Commands APPEND/DPATH and FTYPE are also concerned by this; however
we do not implement them in our CMD.EXE yet.

These commands set the ERRORLEVEL differently, whether or not they are
run manually from the command-line/from a .BAT file, or from a .CMD file:

- From command-line/.BAT file, these commands set the ERRORLEVEL only if
  an error occurs. So, if two commands are run consecutively and the first
  one fails, the ERRORLEVEL will remain set even if the second command
  succeeds.

- However, when being run from a .CMD file, these command will always
  set the ERRORLEVEL. In the example case described above, the second
  command that succeeds will reset the ERRORLEVEL to 0.

This behaviour is determined from the top-level batch/script file being
run. This means that, if a .BAT file is first started, then starts a
.CMD file, the commands will still behave the .BAT way; on the opposite,
if a .CMD file is first started, then starts a .BAT file, these commands
will still behave the .CMD way.

To implement this we introduce one global BATCH_TYPE enum variable that
is initialized to the corresponding batch/script file type when the
top-level script is loaded. It is reset to "none" when that script
terminates.

See https://ss64.com/nt/errorlevel.html for more details,
section "Old style .bat Batch files vs .cmd Batch scripts",
and https://groups.google.com/forum/#!msg/microsoft.public.win2000.cmdprompt.admin/XHeUq8oe2wk/LIEViGNmkK0J
(comment by Mark Zbikowski).
2020-09-23 00:22:46 +02:00
Hermès Bélusca-Maïto
a5d7a2cd61
[CMD] Code style and formatting fixes for assoc.c and path.c 2020-09-23 00:22:45 +02:00
Hermès Bélusca-Maïto
0695ecbfd6
[CMD] FOR: Additional Windows' CMD compatibility "fixes" for FOR /F token parsing command.
This compatibility behaviour implements the buggy behaviour of FOR /F
token parsing that can be observed in Windows' CMD, and that is tested
by the cmd_winetests.
It can be disabled at compile time via the MSCMD_FOR_QUIRKS define.

It fixes additional cmd_winetests, in concert with commit cb2a9c31.

Explanation of the implemented buggy behaviour
==============================================

In principle, the "tokens=x,y,m-n[*]" option describes a list of token
numbers (must be between 1 and 31) that will be assigned into variables.
Theoretically this option does not cumulate: only the latest 'tokens='
specification should be taken into account.

However things are not that simple in practice. First, not all of the
"tokens=" option state is reset when more than one specification is
provided. Second, when specifying a token range, e.g. "1-5", Windows'
CMD just ignores without error ranges that are not specified in
increasing order. Thus for example, a range "5-1" is ignored without
error. Then, token numbers strictly greater than 31 are just ignored,
and if they appear in a range, the whole range is ignored.

Another bug is the following one: suppose that the 'tokens'
specification reads:
  "tokens=1-5,1-30" , or: "tokens=1-5,3" ,
i.e. more than one range, that overlap partially. Then the actual total
number of variables will not be of the larger range size, but will be
the sum, instead.
Thus, in the first example, a total of 5 + 30 == 35 variables (> 31) is
allocated, while in the second example, a total of 5 + 1 == 6 variables
is allocated, even if they won't all store data !!
In the first example, only the first 30 FOR variables will be used, and
the 5 others will contain an empty string. In the second example, only
the first 5 FOR variables will be used, and the other one will be empty.

We also see that due to that, the "Variables" buffer of fixed size
cannot always be used (since it can contain at most 32 variables).

Last but not least, when more than one "tokens=" specification is
provided, for example:
  "tokens=1-31 tokens=1-20"
a total number of 31 FOR variables (because 31 is the max of 31 and 20)
is allocated, **but** only 20 are actually used, and the 11 others
return an empty string.

And in the specification: "tokens=1-31,* tokens=1-20", a total of
31 + 1 + 20 = 52 variables is initialized, but only the first 20 will
be used, and no "remaining-line" token (the '*' one) is used.
2020-09-21 03:31:01 +02:00
Hermès Bélusca-Maïto
e904471023
[CMD] IF: Fix x64 warning C4267. 2020-09-21 03:31:01 +02:00
Oleg Dubinskiy
b62948ef77 [RAPPS] Use RegDeleteKeyExW for deleting the apps strings from registry only if it is available in advapi32
Otherwise, use `RegDeleteKeyW` instead, on Windows versions whose don't have the Ex function (XP SP3 x32, Server 2003 SP0 and earlier).
It will fix regression with Rapps startup there, due to that missing function.
CORE-17264
2020-09-20 19:23:06 +02:00
Oleg Dubinskiy
7eb90143f8
[RAPPS] Display custom applications icons for installed applications CORE-17257 (#3144)
* [RAPPS] Display custom applications icons for installed applications
- Implement `RetrieveIcon` helper function in `CInstalledApplicationInfo` class, which retrueves the current app's icon from registry, same as it done for `CAvailableApplicationInfo`.
- Use it for loading the icon in `CAppsListView::AddInstalledApplication` function, via `ExtractIconW`. Load default Rapps icon only when the app has no its custom icon.
- Retrieve `DisplayIcon` value from registry in `CInstalledApps::Enum` function, same as other registry values (like app name, description, etc).Store it in `szDisplayIcon` string, which is used in `CInstalledApplicationInfo::RetrieveIcon` for retrieving the data of that value.
- Increase `LISTVIEW_ICON_SIZE` macro from 24 to 32, so 32x32 icon size is now used instead of 24x24. This makes displayed icons more accurate, since most of apps contain 32x32 icon, so they look a bit distorted with 24x24 size.
2020-09-20 19:19:59 +02:00
Mark Jansen
7119b13a28
[CREATECABFILE] Update rapps example scripts for new usage 2020-09-20 17:30:26 +02:00
Katayama Hirofumi MZ
a9f60321f0
[MORE] Implement 'Q' key for 'Quit' (#3210)
Implement 'Quit' action for keyboard key 'Q'. CORE-4019
2020-09-20 07:16:21 +09:00
Hermès Bélusca-Maïto
5d5a1a455c
[CMD] FOR: Fix a bug when parsing the "delims=" option in FOR loops.
Suppose the following FOR-loop command, to be run from the command-line
(if using a batch file, double each percent '%' sign):

  FOR %l IN ("a,b,c,d,e" "f,g,h,i,j") DO (
    FOR /F "delims=, tokens=1-3*" %a IN (%l) DO @echo %a-%b-%c-%d
  )

The outermost FOR-loop enumerates the two strings "a,b,c,d,e" and
"f,g,h,i,j" (placed in %l), and parse each of these in turn, splitting
them at each specified delimiter (here only one character) ',' and storing
the results in consecutive tokens %a, %b, %c, %d, with the last token %d
containing all the remaining string (non-split).
The expected result is:

  a-b-c-d,e
  f-g-h-i,j

However, due to the way the delimiters string specified by the "delims="
option is stored (no stack/heap duplication of the FOR-option substring,
but reading from it directly), during the first run of the innermost
FOR-loop, the option string "delims=, tokens=1-3*" was truncated to just
after the ',' due to the erroneous "delims=" parsing, so that when this
FOR-loop ran for a second time (to deal with the second string), the option
string was already erroneously truncated, without the "tokens=..." part,
so that the parsing results were not stored in the tokens and resulting in:

  a-b-c-d,e
  f-%b-%c-%d

instead. The solution is to save where the "delims=" string needs to be
cut, but wait until running the actual FOR-loop to terminate it (and
saving the original character too), run the FOR-loop body, and then
restore the original character where termination took place. This allows
having the FOR-loop option string valid for the next execution of the
FOR-loop.
2020-09-19 19:44:56 +02:00