pips/mk
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Anchor regex meta-rules.

Browse source
This commit is contained in:
Daniel Jones 2014-02-01 19:13:27 -08:00
parent 75d67f9fdb
commit ccd90668b9
2 changed files with 3 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

2
README.md
View file

@ -58,6 +58,8 @@ improvements.
`-p=1` if this is the case. `-p=1` if this is the case.
1. Use Go regular expressions, which are perl-like. The original mk used plan9 1. Use Go regular expressions, which are perl-like. The original mk used plan9
regex, which few people know or care to learn. regex, which few people know or care to learn.
1. Regex matches are substituted into rule prerequisites with `$stem1`,
`$stem2`, etc, rather than `\1`, `\2`, etc.
1. Allow blank lines in recipes. A recipe is any indented block of text, and 1. Allow blank lines in recipes. A recipe is any indented block of text, and
continues until a non-indented character or the end of the file. (Similar continues until a non-indented character or the end of the file. (Similar
to blocks in Python.) to blocks in Python.)

2
parse.go
View file

@ -308,7 +308,7 @@ func parseRecipe(p *parser, t token) parserStateFun {
r.targets = append(r.targets, pattern{spat: targetstr}) r.targets = append(r.targets, pattern{spat: targetstr})
if r.attributes.regex { if r.attributes.regex {
rpat, err := regexp.Compile(targetstr) rpat, err := regexp.Compile("^" + targetstr + "$")
if err != nil { if err != nil {
msg := fmt.Sprintf("invalid regular expression: %q", err) msg := fmt.Sprintf("invalid regular expression: %q", err)
p.basicErrorAtToken(msg, p.tokenbuf[k]) p.basicErrorAtToken(msg, p.tokenbuf[k])