diff options
Diffstat (limited to '')
| -rw-r--r-- | _posts/2020-05-20-makefile-escaping.md | 44 |
1 files changed, 22 insertions, 22 deletions
diff --git a/_posts/2020-05-20-makefile-escaping.md b/_posts/2020-05-20-makefile-escaping.md index f3d301e..bdc56cb 100644 --- a/_posts/2020-05-20-makefile-escaping.md +++ b/_posts/2020-05-20-makefile-escaping.md @@ -106,8 +106,8 @@ line? Same line? {% endcapture %} -{% include shell.html cmd='cat Makefile' out=out1 %} -{% include shell.html cmd='make test' out=out2 %} +{% include jekyll-theme/shell.html cmd='cat Makefile' out=out1 %} +{% include jekyll-theme/shell.html cmd='make test' out=out2 %} This is quite often sufficient to write valid recipes. @@ -137,8 +137,8 @@ bash: -c: line 0: unexpected EOF while looking for matching `'' make: *** [Makefile:11: test] Error 2 {% endcapture %} -{% include shell.html cmd='cat Makefile' out=out1 %} -{% include shell.html cmd='make test' out=out2 %} +{% include jekyll-theme/shell.html cmd='cat Makefile' out=out1 %} +{% include jekyll-theme/shell.html cmd='make test' out=out2 %} One solution is to take advantage of how `bash` parses command arguments, and replace every quote `'` by `'\''`. @@ -161,8 +161,8 @@ printf '%s\n' 'Includes '\'' quote' Includes ' quote {% endcapture %} -{% include shell.html cmd='cat Makefile' out=out1 %} -{% include shell.html cmd='make test' out=out2 %} +{% include jekyll-theme/shell.html cmd='cat Makefile' out=out1 %} +{% include jekyll-theme/shell.html cmd='make test' out=out2 %} Surprisingly, this works even in much more complicated cases. You can have a recipe that executes a command that takes a whole other command @@ -195,8 +195,8 @@ bash -c 'bash -c '\''printf '\''\'\'''\''%s\n'\''\'\'''\'' '\''\'\'''\''Includes Includes ' quote {% endcapture %} -{% include shell.html cmd='cat Makefile' out=out1 %} -{% include shell.html cmd='make test' out=out2 %} +{% include jekyll-theme/shell.html cmd='cat Makefile' out=out1 %} +{% include jekyll-theme/shell.html cmd='make test' out=out2 %} That's somewhat insane, but it works. @@ -254,10 +254,10 @@ Variable ${reference} Composite value - Simple value - Variable ${reference} {% endcapture %} -{% include shell.html cmd='cat Makefile' out=out1 %} -{% include shell.html cmd=cmd2 out=out2 %} -{% include shell.html cmd=cmd3 out=out3 %} -{% include shell.html cmd=cmd4 out=out4 %} +{% include jekyll-theme/shell.html cmd='cat Makefile' out=out1 %} +{% include jekyll-theme/shell.html cmd=cmd2 out=out2 %} +{% include jekyll-theme/shell.html cmd=cmd3 out=out3 %} +{% include jekyll-theme/shell.html cmd=cmd4 out=out4 %} Environment variables --------------------- @@ -303,8 +303,8 @@ Variable Variable ${reference} {% endcapture %} -{% include shell.html cmd='cat Makefile' out=out1 %} -{% include shell.html cmd=cmd2 out=out2 %} +{% include jekyll-theme/shell.html cmd='cat Makefile' out=out1 %} +{% include jekyll-theme/shell.html cmd=cmd2 out=out2 %} Here, `$(test_var)` is expanded recursively, substituting an empty string for the `${reference}` part. @@ -319,7 +319,7 @@ Variable ${reference} Variable $${reference} {% endcapture %} -{% include shell.html cmd=cmd1 out=out1 %} +{% include jekyll-theme/shell.html cmd=cmd1 out=out1 %} A working solution would be to use the `escape` function on the unexpanded variable value. @@ -348,8 +348,8 @@ Quote ' and variable ${reference} Quote ' and variable ${reference} {% endcapture %} -{% include shell.html cmd='cat Makefile' out=out1 %} -{% include shell.html cmd=cmd2 out=out2 %} +{% include jekyll-theme/shell.html cmd='cat Makefile' out=out1 %} +{% include jekyll-theme/shell.html cmd=cmd2 out=out2 %} This doesn't quite work though when [overriding variables] on the command line. For example, this doesn't work: @@ -366,7 +366,7 @@ Variable Variable {% endcapture %} -{% include shell.html cmd=cmd1 out=out1 %} +{% include jekyll-theme/shell.html cmd=cmd1 out=out1 %} This is because `make` ignores all assignments to `test_var` if it's overridden on the command line (including `test_var := $(value test_var)`). @@ -476,7 +476,7 @@ Variable ${reference} Composite value - New simple value - Variable ${reference} {% endcapture %} -{% include shell.html cmd='cat Makefile' out=out1 %} -{% include shell.html cmd='make test' out=out2 %} -{% include shell.html cmd=cmd3 out=out3 %} -{% include shell.html cmd=cmd4 out=out4 %} +{% include jekyll-theme/shell.html cmd='cat Makefile' out=out1 %} +{% include jekyll-theme/shell.html cmd='make test' out=out2 %} +{% include jekyll-theme/shell.html cmd=cmd3 out=out3 %} +{% include jekyll-theme/shell.html cmd=cmd4 out=out4 %} |