好的,今天两次我看到人们想要更接近 hg grep 的等价物,它类似于 git log -pS,但将其输出限制为(带注释的)更改的行。 p>
如果您想快速浏览一下,我想这会比寻呼机中的/pattern/ 更方便。
所以这里有一个 diff-hunk 扫描器,它接受 git log --pretty=%h -p 输出并吐出带注释的更改行。把它放在diffmarkup.l,比如说make ~/bin/diffmarkup,像这样使用它
git log --pretty=%h -pS pattern | diffmarkup | grep pattern
%option main 8bit nodefault
// vim: tw=0
%top{
#define _GNU_SOURCE 1
}
%x commitheader
%x diffheader
%x hunk
%%
char *afile=0, *bfile=0, *commit=0;
int aline,aremain,bline,bremain;
int iline=1;
<hunk>\n ++iline; if ((aremain+bremain)==0) BEGIN diffheader;
<*>\n ++iline;
<INITIAL,commitheader,diffheader>^diff.* BEGIN diffheader;
<INITIAL>.* BEGIN commitheader; if(commit)free(commit); commit=strdup(yytext);
<commitheader>.*
<diffheader>^(deleted|new|index)" ".* {}
<diffheader>^"---".* if (afile)free(afile); afile=strdup(strchrnul(yytext,'/'));
<diffheader>^"+++".* if (bfile)free(bfile); bfile=strdup(strchrnul(yytext,'/'));
<diffheader,hunk>^"@@ ".* {
BEGIN hunk; char *next=yytext+3;
#define checkread(format,number) { int span; if ( !sscanf(next,format"%n",&number,&span) ) goto lostinhunkheader; next+=span; }
checkread(" -%d",aline); if ( *next == ',' ) checkread(",%d",aremain) else aremain=1;
checkread(" +%d",bline); if ( *next == ',' ) checkread(",%d",bremain) else bremain=1;
break;
lostinhunkheader: fprintf(stderr,"Lost at line %d, can't parse hunk header '%s'.\n",iline,yytext), exit(1);
}
<diffheader>. yyless(0); BEGIN INITIAL;
<hunk>^"+".* printf("%s:%s:%d:%c:%s\n",commit,bfile+1,bline++,*yytext,yytext+1); --bremain;
<hunk>^"-".* printf("%s:%s:%d:%c:%s\n",commit,afile+1,aline++,*yytext,yytext+1); --aremain;
<hunk>^" ".* ++aline, ++bline; --aremain; --bremain;
<hunk>. fprintf(stderr,"Lost at line %d, Can't parse hunk.\n",iline), exit(1);