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cmd/dist: don't fail when Mercurial is a batch file on Windows

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On windows Mercurial installed with easy_install typically creates
an hg.bat batch file in Python Scripts directory, which cannot be used
with CreateProcess unless full path is specified. Work around by
launching hg via cmd.exe /c.

Additionally, fix a rare FormatMessageW crash.

Fixes #3093.

R=golang-dev, rsc, alex.brainman, aram, jdpoirier, mattn.jp
CC=golang-dev
https://golang.org/cl/5937043
This commit is contained in:
Alexey Borzenkov 2012-04-09 15:39:59 -04:00 committed by Russ Cox
parent f6d582db61
commit 0669261af1
1 changed files with 4 additions and 2 deletions
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6
src/cmd/dist/windows.c vendored
View File

@ -115,7 +115,7 @@ errstr(void)
binit(&b);
code = GetLastError();
r = nil;
FormatMessageW(FORMAT_MESSAGE_ALLOCATE_BUFFER|FORMAT_MESSAGE_FROM_SYSTEM,
FormatMessageW(FORMAT_MESSAGE_ALLOCATE_BUFFER|FORMAT_MESSAGE_FROM_SYSTEM|FORMAT_MESSAGE_IGNORE_INSERTS,
nil, code, 0, (Rune*)&r, 0, nil);
toutf(&b, r);
return bstr(&b); // leak but we're dying anyway
@ -285,9 +285,11 @@ genrun(Buf *b, char *dir, int mode, Vec *argv, int wait)
binit(&cmd);
for(i=0; i<argv->len; i++) {
q = argv->p[i];
if(i == 0 && streq(q, "hg"))
bwritestr(&cmd, "cmd.exe /c ");
if(i > 0)
bwritestr(&cmd, " ");
q = argv->p[i];
if(contains(q, " ") || contains(q, "\t") || contains(q, "\"") || contains(q, "\\\\") || hassuffix(q, "\\")) {
bwritestr(&cmd, "\"");
nslash = 0;